Design Of Platform Lift For Mits Skywalker Gamma Project

The Skywalker as found in MIT's Newman lab is a device that performs Body Weight Support Treadmill Therapy a form of walking therapy for recovering stroke patients. During clinical trials conducted in the fall of 2014, it became evident that the design of the Skywalker did not fully address how patients would mount and dismount the Skywalker. The current iteration of the design requires the patients to use stairs to mount and dismount the system. Given the gait impairment of the patients using the system it is evident that an alternative must be provided for the stairs in order to make the Skywalker accessible to severe stroke patients. The following thesis explores the idea of using a lead-screw driven platform lift to solve the problem. While the solution developed during the design process is a viable option, the high material cost disqualifies the solution discussed in this thesis as a viable option for implementation in the Skywalker system. The author recommends that alternative solutions such as ramps may provide a more low-cost and effective option for mounting and dismounting the Skywalker.

Michel van Pelt explains for the first time the principle of space tethers: what they are and how they can be used in space. He introduces non-technical space enthusiasts to the various possibilities and feasibility of space tethers including the technological challenges and potential benefits. He illustrates how, because of their inherent simplicity, space tethers have the potential to make space travel much cheaper, while ongoing advances in tether material technology may make even seemingly far-fetched ideas a reality in the not too distant future.

NATIONAL BESTSELLER • Inspired by the fantastic worlds of Star Trek, Star Wars, and Back to the Future, the renowned theoretical physicist and national bestselling author of The God Equation takes an informed, serious, and often surprising look at what our current understanding of the universe's physical laws may permit in the near and distant future. Teleportation, time machines, force fields, and interstellar space ships—the stuff of science fiction or potentially attainable future technologies? Entertaining, informative, and imaginative, Physics of the Impossible probes the very limits of human ingenuity and scientific possibility.

No sooner has Darth Vader's funeral pyre burned to ashes on Endor than the Alliance intercepts a call for help from a far-flung Imperial outpost. Bakura is on the edge of known space and the first to meet the Ssi-ruuk, cold-blooded reptilian invaders who, once allied with the now dead Emperor, are approaching Imperial space with only one goal; total domination. Princess Leia sees the mission as an opportunity to achieve a diplomatic victory for the Alliance. But it assumes even greater importance when a vision of Obi-Wan Kenobi appears to Luke Skywalker with the message that he must go to Bakura-or risk losing everything the Rebels have fought so desperately to achieve. Features a bonus section following the novel that includes a primer on the Star Wars expanded universe, and over half a dozen excerpts from some of the most popular Star Wars books of the last thirty years!

A practitioner's guide to the basic principles of creating sound effects using easily accessed free software. Designing Sound teaches students and professional sound designers to understand and create sound effects starting from nothing. Its thesis is that any sound can be generated from first principles, guided by analysis and synthesis. The text takes a practitioner's perspective, exploring the basic principles of making ordinary, everyday sounds using an easily accessed free software. Readers use the Pure Data (Pd) language to construct sound objects, which are more flexible and useful than recordings. Sound is considered as a process, rather than as data—an approach sometimes known as “procedural audio.” Procedural sound is a living sound effect that can run as computer code and be changed in real time according to unpredictable events. Applications include video games, film, animation, and media in which sound is part of an interactive process. The book takes a practical, systematic approach to the subject, teaching by example and providing background information that offers a firm theoretical context for its pragmatic stance. [Many of the examples follow a pattern, beginning with a discussion of the nature and physics of a sound, proceeding through the development of models and the implementation of examples, to the final step of producing a Pure Data program for the desired sound. Different synthesis methods are discussed, analyzed, and refined throughout.] After mastering the techniques presented in Designing Sound, students will be able to build their own sound objects for use in interactive applications and other projects

Understanding Virtual Reality: Interface, Application, and Design, Second Edition, arrives at a time when the technologies behind virtual reality have advanced dramatically in their development and deployment, providing meaningful and productive virtual reality applications. The aim of this book is to help users take advantage of ways they can identify and prepare for the applications of VR in their field, whatever it may be. The included information counters both exaggerated claims for VR, citing dozens of real-world examples. By approaching VR as a communications medium, the authors have created a resource that will remain relevant even as the underlying technologies evolve. You get a history of VR, along with a good look at systems currently in use. However, the focus remains squarely on the application of VR and the many issues that arise in application design and implementation, including hardware requirements, system integration, interaction techniques and usability. Features substantive, illuminating coverage designed for technical or business readers and the classroom Examines VR's constituent technologies, drawn from visualization, representation, graphics, human-computer interaction and other fields Provides (via a companion website) additional case studies, tutorials, instructional materials and a link to an open-source VR programming system Includes updated perception material and new sections on game engines, optical tracking, VR visual interface software and a new glossary with pictures

This supplement contains advanced starship combat rules for the "Star Wars] Roleplaying Game Saga Edition." In addition, it provides new character options for spacefaring heroes as well as descriptions, deckplans, and statistics for starships from all eras.

This book tells the GP all he needs to know when he is confronted by a stroke patient. Stroke is possible the most difficult illness that a general practitioner regularly manages. For many reasons, however, he is in an ideal position to manage patients who have suffered an acute stroke.This book covers all aspects of the management of stroke, from the acute diagnostic problems to the provision of long-term care and support for patients and their families.

In the twenty-first century, the debate about life on other worlds is quickly changing from the realm of speculation to the domain of hard science. Within a few years, as a consequence of the rapid discovery by astronomers of planets around other stars, astronomers very likely will have discovered clear evidence of life beyond the Earth. Such a discovery of extraterrestrial life will change everything. Knowing the answer as to whether humanity has company in the universe will trigger one of the greatest intellectual revolutions in history, not the least of which will be a challenge for at least some terrestrial religions. Which religions will handle the discovery of extraterrestrial life with ease and which will struggle to assimilate this new knowledge about our place in the universe? Some religions as currently practiced appear to only be viable on Earth. Other religions could be practiced on distant worlds but nevertheless identify both Earth as a place and humankind as a species of singular spiritual religious importance, while some religions could be practiced equally well anywhere in the universe by any sentient beings. Weintraub guides readers on an invigorating tour of the world’s most widely practiced religions. It reveals what, if anything, each religion has to say about the possibility that extraterrestrial life exists and how, or if, a particular religion would work on other planets in distant parts of the universe.