Papers by Christopher Edward
Oceanography, 2013
Modeling physical-biological responses to climate change in the California Current System.
This Final Design Review report outlines the senior project sponsored by General Atomics Aeronaut... more This Final Design Review report outlines the senior project sponsored by General Atomics Aeronautical Systems, Inc., to design an unmanned aerial vehicle landing gear uplock and door locks. The main goal of the project is to create a proof-of-concept uplock that does not operate on hydraulic power, has minimal moving parts, and can support the weight, vertical acceleration and aerodynamic loads on the landing gear or doors. The document covers the background research, design specifications, design selection process, justifications, manufacturing, and verification of the functional prototype
Asian Journal of Control, 2008
This paper considers time-discretized, non-linear, continuous-time control laws with small comput... more This paper considers time-discretized, non-linear, continuous-time control laws with small computational time-delays. The discretized control is not initiated immediately after the sampling instant t i. Small variable computational delays ∆τ i are assumed to be present. Provided the sampling time τ is small and the maximum ratio i τ τ ∆ < 1 is known, then the main theorem provides a stability result. In contrast to a former result, the theoretical framework considers robust control problems allowing a class of uncertainty and disturbances to be investigated. The different techniques are compared numerically for a discretized continuous-time sliding-mode based state-feedback control.
We employ a variety of ideas from geometry and topology to perform three new instanton computatio... more We employ a variety of ideas from geometry and topology to perform three new instanton computations in gauge theory and string theory. First, we consider supersymmetric QCD with gauge group SU (N c) and with N f flavors. In this theory, it is well known that instantons generate a superpotential if N f = N c − 1 I would first and foremost like to thank my advisor, Edward Witten, for generously sharing his ideas and his time with me and, in particular, for suggesting the projects that form the basis of this thesis. It has been a great opportunity for me to work with Edward, from whom I have learned much, and this thesis is based entirely on our joint work. I would also like to thank especially my undergraduate advisor, Ronen Plesser, who first taught me about field theory, string theory, and (most importantly) what it means to conduct research. My work with Ronen, along with his constant encouragement, were
Rethinking Democracy Support, Sep 1, 2012
The late 1980s and early 1990s arguably constituted a 'golden age'for Western democracy... more The late 1980s and early 1990s arguably constituted a 'golden age'for Western democracy promotion. It was an age of liberal internationalism, of increased democratic demands, of liberal triumphalism and confident advancement of liberal ideals in developing and undemocratic countries. Today the confidence of donors in liberal internationalism and liberal ideals, and the demand for them globally, is far less evident. Indeed, in important respects the global financial crisis and the Arab Spring have exposed crucial weaknesses ...
Advanced Functional Materials, 2008
Electronic transport properties of ensembles of perylene-substituted polyisocyanopeptide arrays**
Uploads
Papers by Christopher Edward