1,816 research outputs found
Spaceborne memory organization, an associative data acquisition system, phase II Final report, Apr. - Dec. 1966
Spaceborne memory organization, associative data acquisition system design, and data compression technique
The Effects of the Garrison Dam on the Community of Elbowoods
The purpose of this study is to describe and explain the social disorganization and community upheaval of Native Americans in Elbowoods created by the construction of the Garrison Dam. The construction of the Garrison Dam in 1954, by the United States Army Corps of Engineers, was devastating not only for Fort Berthold Indian Reservation but also for Elbowoods. Flooding of the thousands of acres caused the residences of Elbowoods to give up farmland, natural shelter for human and cattle, family structure, community gardens, and a way of life that existed for thousands of years.
The data was collected by interviews, emphasizing qualitative analysis. Ten individuals who previously lived in the community of Elbowoods were the subjects for the interview. The questions consisted of personal experiences explaining how the dam changed the community and what affect the relocation had on individuals. Additional information came from newspapers, published reports, pictures, a video, and Congressional reports and hearings.
The theories guiding the research were social disorganization and a concept known as community theory. Community theory has been used to explain the function and importance of the conceptualization that community life provides to its residence. The theory of social disorganization provides the perspective of the drastic change in lifestyle that the community of Elbowoods experienced. The data collected provides evidence to enhance that history and also serves as a voice to those who were not heard. It reveals the attempts to cope and adapt to a “loss of community” that others have experienced
Spaceborne memory organization, phase 1 Final report
Application of associative memories to data processing for future space vehicle
Application of the comparison principle to analysis of nonlinear systems
A comparison principle based on a Kamke theorem and Lipschitz conditions is presented along with its possible applications and modifications. It is shown that the comparison lemma can be used in the study of such areas as classical stability theory, higher order trajectory derivatives, Liapunov functions, boundary value problems, approximate dynamic systems, linear and nonlinear systems, and bifurcation analysis
Spaceborne memory organization Interim report
Associative memory applications in unmanned space vehicle
Periodical Cicadas Are Coming in May!
Millions of 17-cicadas will come out in southern Iowa in May 1963; 20,000 - 40,000 may emerge around a single tree. They won\u27t sting or bite humans and animals or do much damage, but they will make a lot of noise
The risks may be too high
The proposed revisions to the diagnosis of personality disorders in ICD‐11 move the diagnosis of personality disorders from the categorical to the dimensional. Although there may be a number of good reasons to consider changes in the manner in which we diagnose personality disorders, the method proposed here goes too far in the degree of changes that it proposes. It ignores the fact that at least for some of the personality disorders, there is data that supports them as distinct diagnostic entities separate from other axis I and axis II disorders. Eliminating the diagnostic categories that have been part of the established psychiatric nomenclature for the last 30 years threatens to undermine the significant research and clinical advances that have been made using categorical diagnoses. Copyright © 2011 John Wiley & Sons, Ltd.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87112/1/pmh187.pd
Floquet exceptional contours in Lindblad dynamics with time-periodic drive and dissipation
The dynamics of an isolated quantum system is coherent and unitary. Weak
coupling to the environment leads to decoherence, which is traditionally
modeled with a Lindblad equation for the system's density matrix. Starting from
a pure state, such a system approaches a steady state (mixed or otherwise) in
an underdamped or overdamped manner. This transition occurs at an eigenvalue
degeneracy of a Lindblad superoperator, called an exceptional point (EP), where
corresponding eigenvectors coalesce. Recent years have seen an explosion of
interest in creating exceptional points in a truly quantum domain, driven by
the enhanced sensitivity and topological features EPs have shown in their
classical realizations. Here, we present Floquet analysis of a prototypical
qubit whose drive or dissipator strengths are varied periodically. We consider
models with a single dissipator that generate global loss (phase damping) or
mode-selective loss (spontaneous emission). In all cases, we find that periodic
modulations lead to EP lines at small dissipator strengths, and a rich EP
structure in the parameter space. Our analytical and numerical results show
that extending Lindblad Liouvillians to the Floquet domain is a new,
potentially preferred route to accessing exceptional points in the transient
dynamics towards the Lindblad steady state.Comment: 4 figures, 7 page
Spontaneous Scalarization and Boson Stars
We study spontaneous scalarization in Scalar-Tensor boson stars. We find that
scalarization does not occur in stars whose bosons have no self-interaction. We
introduce a quartic self-interaction term into the boson Lagrangian and show
that when this term is large, scalarization does occur. Strong self-interaction
leads to a large value of the compactness (or sensitivity) of the boson star, a
necessary condition for scalarization to occur, and we derive an analytical
expression for computing the sensitivity of a boson star in Brans-Dicke theory
from its mass and particle number. Next we comment on how one can use the
sensitivity of a star in any Scalar-Tensor theory to determine how its mass
changes when it undergoes gravitational evolution. Finally, in the Appendix, we
derive the most general form of the boson wavefunction that minimises the
energy of the star when the bosons carry a U(1) charge.Comment: 23 pages, 5 postscript figures. Typing errors corrected. Includes
some new text that relates the paper to several previous results. Accepted
for publication in PR
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