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Full-Text Articles in Physical Sciences and Mathematics
Testing General Relativity With Current Cosmological Data, Scott F. Daniel, Eric V. Linder, Tristan L. Smith, Robert R. Caldwell
Testing General Relativity With Current Cosmological Data, Scott F. Daniel, Eric V. Linder, Tristan L. Smith, Robert R. Caldwell
Dartmouth Scholarship
Deviations from general relativity, such as could be responsible for the cosmic acceleration, would influence the growth of large-scale structure and the deflection of light by that structure. We clarify the relations between several different model-independent approaches to deviations from general relativity appearing in the literature, devising a translation table. We examine current constraints on such deviations, using weak gravitational lensing data of the CFHTLS and COSMOS surveys, cosmic microwave background radiation data of WMAP5, and supernova distance data of Union2. A Markov chain Monte Carlo likelihood analysis of the parameters over various redshift ranges yields consistency with general relativity …
Control System Performance And Efficiency For A Mid-Depth Lagrangian Profiling Float, B. Mcgilvray, C. Roman
Control System Performance And Efficiency For A Mid-Depth Lagrangian Profiling Float, B. Mcgilvray, C. Roman
Christopher N. Roman
This paper presents the development of a new mid-depth Lagrangian profiling float with a primary emphasis on the control system performance and efficiency. While deep water floats have demonstrated much success in open ocean environments, many are not suited for the additional challenges associated with coastal regions. To study these regions, which are often subject to varying bathymetry within the operating range and higher variations in water density, a more advanced system is required. This new design utilizes pressure and altitude feedback to drive a high volume auto-ballasting system (ABS). The main operating modes of this float include step inputs …
Bridging Micro And Macro Through Experimental Information Acceleration, Tim R. Coltman, Pierre Richard
Bridging Micro And Macro Through Experimental Information Acceleration, Tim R. Coltman, Pierre Richard
Faculty of Informatics - Papers (Archive)
Among leading organizations in all sectors there is evidence that successful managers possess the capability to deal with contradictory tensions within their “macro” competitive and institutional environments. Furthermore, the strategic thinking and decision-making capabilities expected of managers highlight the importance of “micro” processes within organizations. Although macro and micro perspectives are intuitively linked, the empirical literature often separates these two perspectives into either strategy content or process. This paper demonstrates how an experimental method based on “discrete choice analysis” and “information acceleration” can be used to bridge the divide between “micro” managerial processes and the “macro” environmental contexts framing them. …