2,141 research outputs found
Polyurethane spray coating of aluminum wire bonds to prevent corrosion and suppress resonant oscillations
Unencapsulated aluminum wedge wire bonds are common in particle physics pixel
and strip detectors. Industry-favored bulk encapsulation is eschewed due to the
range of operating temperatures and radiation. Wire bond failures are a
persistent source of tracking-detector failure. Unencapsulated bonds are
vulnerable to condensation-induced corrosion, particularly when halides are
present. Oscillations from periodic Lorentz forces are documented as another
source of wire bond failure. Spray application of polyurethane coatings,
performance of polyurethane-coated wire bonds after climate chamber exposure,
and resonant properties of polyurethane-coated wire bonds and their resistance
to periodic Lorentz forces are under study for use in a future High Luminosity
Large Hadron Collider detector such as the ATLAS Inner Tracker upgrade
In Search of Homo Economicus: Behavioral Experiments in 15 Small- Scale Societies,
Homo Economicus, Behavioral Experiments, Small-Scale Societies,
BioBridge: Bringing Data Exploration to Biologists
Since the completion of the Human Genome Project in 2003, biologists have become exceptionally good at producing data. Indeed, biological data has experienced a sustained exponential growth rate, putting effective and thorough analysis beyond the reach of many biologists. This thesis presents BioBridge, an interactive visualization tool developed to bring intuitive data exploration to biologists. BioBridge is designed to work on omics style tabular data in general and thus has broad applicability.
This work describes the design and evaluation of BioBridge\u27s Entity View primary visualization as well the accompanying user interface. The Entity View visualization arranges glyphs representing biological entities (e.g. genes, proteins, metabolites) along with related text mining results to provide biological context. Throughout development the goal has been to maximize accessibility and usability for biologists who are not computationally inclined. Evaluations were done with three informal case studies, one of a metabolome dataset and two of microarray datasets.
BioBridge is a proof of concept that there is an underexploited niche in the data analysis ecosystem for tools that prioritize accessibility and usability. The use case studies, while anecdotal, are very encouraging. These studies indicate that BioBridge is well suited for the task of data exploration. With further development, BioBridge could become more flexible and usable as additional use case datasets are explored and more feedback is gathered
Continuous Improvement in Battery Testing at the NASA/JSC Energy System Test Area
The Energy Systems Test Area (ESTA) at the Lyndon B. Johnson Space Center in Houston, Texas conducts development and qualification tests to fulfill Energy System Division responsibilities relevant to ASA programs and projects. EST A has historically called upon a variety of fluid, mechanical, electrical, environmental, and data system capabilities spread amongst five full-service facilities to test human and human supported spacecraft in the areas of propulsion systems, fluid systems, pyrotechnics, power generation, and power distribution and control systems. Improvements at ESTA are being made in full earnest of offering NASA project offices an option to choose a thorough test regime that is balanced with cost and schedule constraints. In order to continue testing of enabling power-related technologies utilized by the Energy System Division, an especially proactive effort has been made to increase the cost effectiveness and schedule responsiveness for battery testing. This paper describes the continuous improvement in battery testing at the Energy Systems Test Area being made through consolidation, streamlining, and standardization
Cameras in Court: \u3cem\u3eEstes v. Texas\u3c/em\u3e and Florida\u27s One Year Pilot Program
This article discusses Florida\u27s experiment with cameras in state courtrooms in the context of the decision of the Supreme Court of the United States in Estes v. Texas. Competing factors of a defendant\u27s right to a fair and public trial, the first amendment rights of the media and the necessity of maintaining an independent judiciary are considered
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The world-wide news agencies: development organization, competition, markets and product. A study of Agence France Presse, Associated Press, Reuters and United Press, to 1975
The thesis argues that in their development, organization and news services, the major western-based global news agencies have responded and continue to respond primarily to the requirements of western markets. In particular, their domestic markets are shown to be especially important to them, and much of their early development is explained by their struggle to secure monopolistic or oligopolistic control of these markets. The struggle to, achieve security in the domestic markets greatly tempered early international competition between the agencies in a way that still has consequences for their relative market positions in certain world regions, and which has hindered their penetration of one another's domestic markets. Nevertheless, growing international competition, general difficulties in traditional domestic newspaper markets and the evolution of new client requirements have combined to stimulate considerable market diversification in recent decades, both inside and outside media client groups. Within their traditional overseas markets, the global agencies, in their organization of news-gathering and news-distribution, have made considerable use of the national news agencies. The global agencies have stimulated the development of many such agencies, entering into relationships of unequal exchange with them, while only marginally threatened by the attempts of some national agencies to upset the dominant market position of their global partners. The thesis provides evidence of contemporary agency organization, news-gathering practices and news-service content in order to support the argument that there continues to exist a structural imbalance in agency operations which favours western market interests, and to further explore the underlying significance of their organizational priorities
Cameras in Court: \u3cem\u3eEstes v. Texas\u3c/em\u3e and Florida\u27s One Year Pilot Program
This article discusses Florida\u27s experiment with cameras in state courtrooms in the context of the decision of the Supreme Court of the United States in Estes v. Texas. Competing factors of a defendant\u27s right to a fair and public trial, the first amendment rights of the media and the necessity of maintaining an independent judiciary are considered
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