Spacelab experiment computer study. Volume 2: Study elements and approach

For abstract, see volume 1 N77-13097

Variability of crop calendar stage dates

There are no author-identified significant results in this report

Evaluation of registration, compression and classification algorithms. Volume 1: Results

The registration, compression, and classification algorithms were selected on the basis that such a group would include most of the different and commonly used approaches. The results of the investigation indicate clearcut, cost effective choices for registering, compressing, and classifying multispectral imagery

Evaluation of registration, compression, and classification algorithms. Volume 2: Documentation

There are no author-identified significant results in this report

Subsystem Pseudo-pure States

A critical step in experimental quantum information processing (QIP) is to implement control of quantum systems protected against decoherence via informational encodings, such as quantum error correcting codes, noiseless subsystems and decoherence free subspaces. These encodings lead to the promise of fault tolerant QIP, but they come at the expense of resource overheads. Part of the challenge in studying control over multiple logical qubits, is that QIP test-beds have not had sufficient resources to analyze encodings beyond the simplest ones. The most relevant resources are the number of available qubits and the cost to initialize and control them. Here we demonstrate an encoding of logical information that permits the control over multiple logical qubits without full initialization, an issue that is particularly challenging in liquid state NMR. The method of subsystem pseudo-pure state will allow the study of decoherence control schemes on up to 6 logical qubits using liquid state NMR implementations.Comment: 9 pages, 1 Figur

Evaluation of experimental epoxy monomers

Future generation aircraft need higher performance polymer matrices to fully achieve the weight savings possible with composite materials. New resins are being formulated in an effort to understand basic polymer behavior and to develop improved resins. Some polymer/curing agent combinations that could be useful are difficult to process. In the area of epoxies, a major problem is that some components have physical properties which make them difficult to utilize as matrix resins. A previous study showed that the use of ultrasonic energy can be advantageous in the mixing of curing agents into a standard epoxy resin, such as MY 720 (Ciba-Geigy designation). This work is expanded to include three novel epoxides

Locally-Owned Retail Stores and Downtown Revitalization:Investigating the Role of Place Attachment

Through revitalization, many downtown areas across the US are seeking to become shopping destinations by creating consumption spaces that are distinct from those in the suburbs. It is possible that the role of place and the bonds that people form with places are key factors involved in achieving the success of distinct consumption spaces. The purpose of this study was to understand the role of attachment to place within the dynamic that exists between local retail store ownership and downtown revitalization. An ethnographic approach to research was employed. Findings of this study highlight the importance of place attachment not just among participants as owners of small retail stores, but for the entire downtown as a community of retailers operating within an area that is being revitalized