Study of microwave-assisted magnetization dynamics in magnetic films and structures

Ph.DDOCTOR OF PHILOSOPH

The Way Around: Walking into Revolution

The Way Around: Walking into Revolution Chairperson: Phil Condon The Way Around investigates revolution through personal accounts of pilgrimage, ecopsychology, and activism. For ten years (2006-2016), I engaged in various forms of circular travel across the world to understand the true shape of revolution—its etymology, its use throughout history, and if revolution might be some universal inertia that drives us all forward. The journey begins in 2006, where I travel around the world for a year. I weave together discoveries of place and planet with a 500-year historical account of human circumnavigation. Returning to Portland, Oregon, I’m introduced to the practice of long-distance running through circling around several Pacific Northwest volcanoes on foot. This more localized form of circumnavigation further attunes me to the cyclical patterns of ecology, which pulls me into more political orbits of activism and civic engagement to protect these spaces. I get involved with Occupy Wall Street and one evening run for several hours around the Portland encampment, a kinesthetic revolution evolving into a meditation on political revolution. After circling the globe, orbiting volcanoes, and budding as an activist, in 2014, I travel 7,000 miles to Western Tibet and circumambulate 21,778-foot Mount Kailash. Here, I find circumambulation functioning both as spiritual practice and cultural survival. This journey would direct me a year later back to Northern California, my birthplace, where, in 2015, I organize a fifty-year anniversary circumambulation of Mount Tamalpais, a tradition started in 1965, by poet Gary Snyder. The aperture of my personal revolution through all of these experiences continues to focus locally inward, towards home. In my new home in Missoula, Montana, on the opening day of the 2015 COP21 climate negotiations in Paris, I hold a demonstration on the University of Montana campus and incorporate circular walking to represent the planet’s six mass extinctions. In the end, after a decade of circuitous experiences, each brought me closer and closer to home, closer to a shared tension of rootedness and curiosity for the whole. I discovered that transformation—personal, political, planetary—moves in sweeps of cycles, and The Way Around attempts to illustrate this revolutionary heritage we all carry with us, not just as humans but as expressions of a planet ever-revolving, ever-renewing, and constantly requiring overthrow to thrive. Revolution, I found, is everywhere

Another spin in the wall : domain wall dynamics in perpendicularly magnetized devices

The world as we know it today would be completely different without spintronics. It has revolutionized the way we carry, store and exchange information in our daily lives. What is it? It is a research realm that combines the fundamental property of the electron, spin, and the charge property driving conventional electronics, hence: spin-tronics. Spintronics has until recently concentrated mainly on the manipulation of chargecurrent through the control of the magnetic state. Currently, a new paradigm has emerged that reverses this idea, basically by applying Newton’s law of action implies reaction. Instead of manipulating the charge-current by the magnetic state, it manipulates the magnetic state by a spin-polarized current, and it is gradually gaining interest. Spin-polarized current induced motion of a magnetic domain wall is the subject of this thesis.We try to use a spin polarized current to push a magnetic domain wall. The interaction between spin-current and the magnetic domain wall is still an open area for exploration; there are still many unanswered questions on the fundamental physics that brings it about. The prospect of new data storage, memory and even bio-related devices makes it a very lively and competitive research topic possibly relevant in shaping our future world. We chose perpendicularly magnetized devices as our material, and for a reason. In this class of materials the magnetic domain walls are very narrow; and this, was our assumption, should increase the interaction between the spin polarized current and the magnetization. Our research has made use of a great variety of experimental and nano-fabrication techniques. Since the nano-fabrication techniques were particularly new to our research group, they have been given ample attention in chapter 2. The material used in our research are perpendicularly magnetized ultrathin Co(FeB) layers

Harnessing nature's timekeeper: a history of the piezoelectric quartz crystal technological community (1880-1959)

In 1880, French brothers Jacques and Pierre Curie discovered the phenomenon of piezoelectricity in naturally occurring quartz crystal, sometimes referred to as 'nature's timekeeper.' By 1959, tens of millions of devices that exploited quartz crystal's piezoelectric character were being used in the technologies of radio, telephony, and electronic timekeeping. This dissertation analyzes the rapid rise of quartz crystal technology in the United States by looking at the growth of its knowledge base as reflected primarily in patents and journal articles. The major finding of this analysis is that the rise of quartz crystal technology cannot be fully understood by looking only at individuals, institutions, and technological factors. Rather, this work posits that the concept of technological community is indispensible in explaining rapid technological growth and diffusion that would otherwise seem inexplicable. In the late 1920s, and again in the early 1940s, the knowledge base of quartz crystal technology experienced exponential growth, partly due to U.S. government patronage and enlightened regulation. However, as this study shows, quartz crystal engineers, scientists, and entrepreneurs could not have mobilized as quickly and effectively as they did unless a vibrant technological community already existed. Furthermore, the United States' ability to support such a thriving community depended in part on an early 20th century American culture that displayed an unmatched enthusiasm for democratic communications media, most especially broadcast radio and universal telephone service. Archival records, professional journal articles, government reports, manufacturer catalogs, and U.S. patents have been used to document this history of the quartz crystal technological community. This dissertation contributes to the literature on technological communities and their role in facilitating technological and ecomonic growth by showing that though such communities often form spontaneously, their growth may be nurtured and stimulated through enlightened government regulation. As such, this dissertation should be of interest to scholars in the fields of history of technology, business history, management studies, and public policy.Ph.D.Committee Chair: Usselman, Steven; Committee Member: Ceccagnoli, Marco; Committee Member: Giebelhaus, August; Committee Member: Hunt, William; Committee Member: Krige, Joh

Technological Impediments to B2C Electronic Commerce: An Update

In 1999, Rose et al. identified six categories of technological impediments inhibiting the growth of electronic commerce: (1) download delays, (2) interface limitations, (3) search problems, (4) inadequate measures of Web application success, (5) security, and (6) a lack of Internet standards. This paper updates findings in the original paper by surveying the practitioner literature for the five-year period from June 1999 to June 2004. We identify how advances in technology both partially resolve concerns with the original technological impediments, and inhibit their full resolution. We find that, despite five years of technological progress, the six categories of technological impediments remain relevant. Furthermore, the maturation of e-Commerce increased the Internet\u27s complexity, making these impediments harder to address. Two kinds of complexity are especially relevant: evolutionary complexity, and skill complexity. Evolutionary complexity refers to the need to preserve the existing Internet and resolve impediments simultaneously. Unfortunately, because the Internet consists of multiple incompatible technologies, philosophies, and attitudes, additions to the Internet infrastructure are difficult to integrate. Skill complexity refers to the skill sets necessary for managing e-Commerce change. As the Internet evolves, more skills become relevant. Unfortunately, individuals, companies and organizations are unable to master and integrate all necessary skills. As a result, new features added to the Internet do not consider all relevant factors, and are thus sub-optimal. NOTE THAT THIS ARTICLE IS APPROXIMATELY 600kb. IF YOU USE A SLOW MODEM, IT MAY TAKE A WHILE TO LOA

Doctor of Philosophy

dissertationIn my dissertation, By Now It Should Sound Like Music, I explore connections between inheritance and writing, and how we experience different kinds of inheritance in our bodies, families, and spiritual lives. Although my primary genre for this project is the essay, many of these pieces have a story to tell. My look at inheritance is as personal as my immediate family, especially my father's adoption, and the turbulence following my grandmother's spiral into Alzheimer's. But I also follow stories and figures far outside of my own experience, such as composer Olivier Messiaen and Mother Teresa. The self is unpredictable, exciting quarry to track. And the self, by itself, is rarely enough. I investigate my Evangelical upbringing, especially the stories, songs, and cultural products like the sinner's prayer and the altar call that were part of my early spiritual formation and embedded in family relationships. In part two of the manuscript, I reach beyond the Evangelical culture of my youth to Catholic and Orthodox expressions of Christianity. In search of wisdom, transcendence, or healing, I look to spiritual places like the rocks of southern Utah, the painted monasteries of Romania, and the dehydrated carnival of Burning Man. By Now It Should Sound Like Music includes many different types of writing, from the protein scripts of our DNA to the lakes and canyons inscribed by glaciers. In these essays, the material shape and heft of words as objects, and not just meanings, are items for study in their own right. Music is one of the most important kinds of "writing" in the collection. Musical notation aims at precision but, like writing, allows room for interpretation in the birdseye of a fermata, or the suggestiveness of a metaphor. Music's other side, silence, is the backdrop of this project. Many of the essays are a reaction to silence: a silence imposed because of illness, death, physical distance, or a severed relationship. A priest I like once explained that the Bible is not the revelation but is a record of the revelation. This manuscript is no Bible, but these essays record. They function like afterimages of things seen and unseen. They function like echoes

Winona Daily News

https://openriver.winona.edu/winonadailynews/1321/thumbnail.jp

Charge and spin transport in nanoscale devices

137 p

Chronology of KSC and KSC Related Events for 1997

This document is intended to serve as a record of KSC events and is a reference source for historians and other researchers. Arrangement is by day and month and individual articles are attributed to published sources. Materials were researched and described by the KSC Library Archivist for KSC Library Services Contractor, Sherikon Space Systems, Inc

Spartan Daily, March 21, 1996

Volume 106, Issue 40https://scholarworks.sjsu.edu/spartandaily/8825/thumbnail.jp