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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Improved design of three-degree of freedom hip exoskeleton based on biomimetic parallel structure

Pan, Min 01 July 2011 (has links)
The external skeletons, Exoskeletons, are not a new research area in this highly developed world. They are widely used in helping the wearer to enhance human strength, endurance, and speed while walking with them. Most exoskeletons are designed for the whole body and are powered due to their applications and high performance needs. This thesis introduces a novel design of a three-degree of freedom parallel robotic structured hip exoskeleton, which is quite different from these existing exoskeletons. An exoskeleton unit for walking typically is designed as a serial mechanism which is used for the entire leg or entire body. This thesis presents a design as a partial manipulator which is only for the hip. This has better advantages when it comes to marketing the product, these include: light weight, easy to wear, and low cost. Furthermore, most exoskeletons are designed for lower body are serial manipulators, which have large workspace because of their own volume and occupied space. This design introduced in this thesis is a parallel mechanism, which is more stable, stronger and more accurate. These advantages benefit the wearers who choose this product. This thesis focused on the analysis of the structure of this design, and verifies if the design has a reasonable and reliable structure. Therefore, a series of analysis has been done to support it. The mobility analysis and inverse kinematic solution are derived, and the Jacobian matrix was derived analytically. Performance of the CAD model has been checked by the finite element analysis in Ansys, which is based on applied force and moment. The comparison of the results from tests has been illustrated clearly for stability iii and practicability of this design. At the end of this thesis, an optimization of the hip exoskeleton is provided, which offers better structure of this design. / UOIT
2

In sii atla nis kwii sii yuk mit kin: The end of one journey is the beginning of another / End of one journey is the beginning of another

Happynook, Tommy 05 May 2010 (has links)
My thesis serves two purposes: First, my research addresses what I have come to recognize as colonial misunderstandings of nuu-chah-nulth ha'wiih. My research and writing invoke new ways of thinking about nuu-chah-nulth people, leaders and knowledge. I accomplish this by writing conversationally and by including unedited interviews and poetry. All of which require readers to consider my research outside of their usual perspective. Second, my research responds to a cultural need to archive important family knowledge while providing the opportunity to define, for outsiders, who we are. The interviews archive, in part, the knowledge and teachings of a cha-cha-tsi-us-aht ha'wilth. My analysis of this information shows that while my family’s knowledge comes from a common source. We all interpret that knowledge in our own way. My research is important academically and politically because of its ability to convey knowledge that has not been simplified, appropriated or colonized for public consumption.
3

Predikce proteinových domén / Protein Domains Prediction

Valenta, Martin January 2013 (has links)
The work is focused on the area of the proteins and their domains. It also briefly describes gathering methods of the protein´s structure at the various levels of the hierarchy. This is followed by examining of existing tools for protein´s domains prediction and databases consisting of domain´s information. In the next part of the work selected representatives of prediction methods are introduced.  These methods work with the information about the internal structure of the molecule or the amino acid sequence. The appropriate chapter outlines applied procedure of domains´ boundaries prediction. The prediction is derived from the primary structure of the protein, using a neural network  The implemented procedure and its possibility of further development in the related thesis are introduced at the conclusion of this work.

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