247 research outputs found
The natural capital accounting opportunity: Let s really do the numbers
This work was conducted as a part of the âAccounting for U.S. Ecosystem Services at National and Subnational Scalesâ working group supported by the National Socio-Environmental Synthesis Center under funding received from the National Science Foundation (grant no. DBI-1052875) and the US Geological Survey John Wesley Powell Center for Analysis and Synthesis (grant no. GX16EW00ECSV00)
Democracy and governance networks: compatible or not?
The relationship between representative democracy and governance networks is investigated
at a theoretical level. Four conjectures about the relationship are defined. The
incompatibility conjectures rests on the primacy of politics and sees governance networks as a
threat. The complementarity conjecture presents governance networks as a means of enabling
greater participation in the policy process and sensitivity in programme implementation. The
transitional conjecture posits a wider evolution of governance forms towards network
relationships. The instrumental conjecture views governance networks as a powerful means
through which dominant interests can achieve their goals. Illustrative implications for theory
and practice are identified, in relation to power in the policy process, the public interest, and
the role of public managers. The heuristic potential of the conjectures is demonstrated
through the identification of an outline research agenda
Study of turbulent fluctuations driven by the electron temperature gradient in the National Spherical Torus Experiment
Modernization and Its Discontents
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/67022/2/10.1177_000276427702100208.pd
Perspectives in Global Helioseismology, and the Road Ahead
We review the impact of global helioseismology on key questions concerning
the internal structure and dynamics of the Sun, and consider the exciting
challenges the field faces as it enters a fourth decade of science
exploitation. We do so with an eye on the past, looking at the perspectives
global helioseismology offered in its earlier phases, in particular the
mid-to-late 1970s and the 1980s. We look at how modern, higher-quality, longer
datasets coupled with new developments in analysis, have altered, refined, and
changed some of those perspectives, and opened others that were not previously
available for study. We finish by discussing outstanding challenges and
questions for the field.Comment: Invited review; to appear in Solar Physics (24 pages, 6 figures
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Robust diffraction-limited near-infrared-to-near-ultraviolet wide-field imaging from stratospheric balloon-borne platforms â super-pressure balloon-borne imaging telescope performance
At a fraction of the total cost of an equivalent orbital mission, scientific balloon-borne platforms, operating above 99.7% of the Earthâs atmosphere, offer attractive, competitive, and effective observational capabilitiesânamely, space-like seeing, transmission, and backgroundsâwhich are well suited for modern astronomy and cosmology. The Super-pressure Balloon-borne Imaging Telescope (SUPERBIT) is a diffraction-limited, wide-field, 0.5 m telescope capable of exploiting these observing conditions in order to provide exquisite imaging throughout the near-infrared to near-ultraviolet. It utilizes a robust active stabilization system that has consistently demonstrated a 48 mas 1Ï sky-fixed pointing stability over multiple 1 h observations at float. This is achieved by actively tracking compound pendulations via a three-axis gimballed platform, which provides sky-fixed telescope stability at < 500 mas and corrects for field rotation, while employing high-bandwidth tip/tilt optics to remove residual disturbances across the science imaging focal plane. SUPERBITâs performance during the 2019 commissioning flight benefited from a customized high-fidelity science-capable telescope designed with an exceptional thermo- and opto-mechanical stability as well as a tightly constrained static and dynamic coupling between high-rate sensors and telescope optics. At the currently demonstrated level of flight performance, SUPERBIT capabilities now surpass the science requirements for a wide variety of experiments in cosmology, astrophysics, and stellar dynamics
The role of Gpi-anchored axonal glycoproteins in neural development and neurological disorders
Desenvolvimento luteal e concentraçÔes plasmåticas de progesterona em vacas das raças Gir e Nelore
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