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Articles 1 - 12 of 12
Full-Text Articles in Physical Sciences and Mathematics
Climate Risk Polycentricity And The Iad Framework, Troy D. Abel, Mark Stephan, Dorothy Daley
Climate Risk Polycentricity And The Iad Framework, Troy D. Abel, Mark Stephan, Dorothy Daley
Troy D. Abel
Climate change is commonly cast as a significant governance challenge demanding national and international actions. Subsequently, political science research tends to focus on the policy and politics of nation-states, their domestic institutions, and/or their interplay in international venues. However, thousands of industrial facilities and hundreds of subnational US governments are active in American climate risk governance. Therefore, we argue that more research should attend to climate governance’s subnational policy and politics, their promise, and their performance. In the vacuum of national policies to mitigate and adapt to climate-change, subnational arrangements offer an ideal opportunity to study not only the spontaneity …
Outer Median Triangles, Árpád Bényi, Branko Ćurgus
Outer Median Triangles, Árpád Bényi, Branko Ćurgus
Árpád Bényi
We define the notions of outer medians and outer median triangles. We show that outer median triangles enjoy similar properties to that of the median triangle.
Comprehensive Analysis Of Escape-Cone Losses From Luminescent Waveguides, Stephen Mcdowall, Tristan Butler, Edward Bain, Kelsey Scharnhorst, David L. Patrick
Comprehensive Analysis Of Escape-Cone Losses From Luminescent Waveguides, Stephen Mcdowall, Tristan Butler, Edward Bain, Kelsey Scharnhorst, David L. Patrick
David L. Patrick
Luminescent waveguides (LWs) occur in a wide range of applications, from solar concentrators to doped fiber amplifiers. Here we report a comprehensive analysis of escape-cone losses in LWs, which are losses associated with internal rays making an angle less than the critical angle with a waveguide surface. For applications such as luminescent solar concentrators, escape-cone losses often dominate all others. A statistical treatment of escape-cone losses is given accounting for photoselection, photon polarization, and the Fresnel relations, and the model is used to analyze light absorption and propagation in waveguides with isotropic and orientationally aligned luminophores. The results are then …
Soil Preparation Methods Promoting Ectomycorrhizal Colonization And American Chestnut (Castanea Dentata) Establishment In Coal Mine Restoration, Jenise Bauman
Jenise M. Bauman
No abstract provided.
A Generalization Of Routh's Triangle Theorem, Árpád Bényi, Branko Ćurgus
A Generalization Of Routh's Triangle Theorem, Árpád Bényi, Branko Ćurgus
Árpád Bényi
No abstract provided.
Thicker Host Tissues Moderate Light Stress In A Cnidarian Endosymbiont, James L. Dimond, Benjamin J. Holzman, Brian L. Bingham
Thicker Host Tissues Moderate Light Stress In A Cnidarian Endosymbiont, James L. Dimond, Benjamin J. Holzman, Brian L. Bingham
Brian L. Bingham
The susceptibility of algal-cnidarian holobionts to environmental stress is dependent on attributes of both host and symbiont, but the role of the host is often unclear. We examined the influence of the host on symbiont light stress, comparing the photophysiology of the chlorophyte symbiont Elliptochloris marina in two species of sea anemones in the genus Anthopleura. After 3 months of acclimation in outdoor tanks, polyp photoprotective contraction behavior was similar between the two host species, but photochemical efficiency was 1.5 times higher in A. xanthogrammica than in A. elegantissima. Maximum relative electron transport rates, derived from rapid light curves, were …
Synthesis And Activity Of The Archazolid Western Hemisphere, Ann B. Tran, Geoffrey C. Melly, Ryan Doucette, Brook Ashcraft, Leanne J. Sebren, Nathan Havko, Jeffery C. Young, Gregory W. O'Neil
Synthesis And Activity Of The Archazolid Western Hemisphere, Ann B. Tran, Geoffrey C. Melly, Ryan Doucette, Brook Ashcraft, Leanne J. Sebren, Nathan Havko, Jeffery C. Young, Gregory W. O'Neil
Gregory W. O'Neil
A convergent and scalable synthesis of the archazolid western hemisphere has been completed. The V-ATPase inhibitory activity of this compound along with a previously prepared eastern domain was then tested using a convenient Arabidop-sis-based V-ATPase assay.
Stamping Oriented Molecular Monolayers Using Liquid Crystal Inks, David L. Patrick, Cory Lund, Steven A. Hickman, Eric Krohn, Robert Thompson
Stamping Oriented Molecular Monolayers Using Liquid Crystal Inks, David L. Patrick, Cory Lund, Steven A. Hickman, Eric Krohn, Robert Thompson
David L. Patrick
Thermotropic liquid crystal (LC)-based inks are combined with patterned anchoring stamps to deposit organic monolayer films with simultaneous control over positional and molecular orientational order in a single step.
Recent Unprecedented Tree-Ring Growth In Bristlecone Pine At The Highest Elevations And Possible Causes, Matthew W. Salzer, Malcolm K. Hughes, Andrew G. Bunn, Kurt F. Kipfmueller
Recent Unprecedented Tree-Ring Growth In Bristlecone Pine At The Highest Elevations And Possible Causes, Matthew W. Salzer, Malcolm K. Hughes, Andrew G. Bunn, Kurt F. Kipfmueller
Andrew G. Bunn
Great Basin bristlecone pine (Pinus longaeva) at 3 sites in western North America near the upper elevation limit of tree growth showed ring growth in the second half of the 20th century that was greater than during any other 50-year period in the last 3,700 years. The accelerated growth is suggestive of an environmental change unprecedented in millennia. The high growth is not overestimated because of standardization techniques, and it is unlikely that it is a result of a change in tree growth form or that it is predominantly caused by CO2 fertilization. The growth surge has occurred only in …
Pompeiu's Theorem Revisited, Árpád Bényi
Pompeiu's Theorem Revisited, Árpád Bényi
Árpád Bényi
Pompeiu's theorem states that if ABC is an equilateral triangle and M a point in its plane, then MA, MB, and MC form a new triangle. In this article, we have a new look at this theorem in the realm of arbitrary triangles. We discover what we call Pompeiu's Area Formula, a neat equality relating areas of triangles determined by the points A, B, C, and M.
The Simple Random Walk On A Random Voronoi Tiling, Amites Sarkar, Louigi Addario-Berry
The Simple Random Walk On A Random Voronoi Tiling, Amites Sarkar, Louigi Addario-Berry
Amites Sarkar
Let P be a Poisson point process in ℝd with intensity 1. We show that the simple random walk on the cells of the Voronoi diagram of P is almost surely recurrent in dimensions d = 1 and d = 2 and is almost surely transient in dimension d ≥ 3.
Effects Of Sampling Standardization On Estimates Of Phanerozoic Marine Diversification, J. Alroy, C. R. Marshall, R. K. Bambach, K. Bezusko, M. Foote, F. T. Fürsich, Thor A. Hansen, S. M. Holland, L. C. Ivany, D. Jablonski, D. K. Jacobs, D. C. Jones, M. A. Kosnik, S. Lidgard, S. Low, A. I. Miller, P. M. Novack-Gottshall, T. D. Olszewski, M. E. Patzkowsky, D. M. Raup, K. Roy, J. J. Sepkoski Jr., M. G. Sommers, P. J. Wagner, A. Webber
Effects Of Sampling Standardization On Estimates Of Phanerozoic Marine Diversification, J. Alroy, C. R. Marshall, R. K. Bambach, K. Bezusko, M. Foote, F. T. Fürsich, Thor A. Hansen, S. M. Holland, L. C. Ivany, D. Jablonski, D. K. Jacobs, D. C. Jones, M. A. Kosnik, S. Lidgard, S. Low, A. I. Miller, P. M. Novack-Gottshall, T. D. Olszewski, M. E. Patzkowsky, D. M. Raup, K. Roy, J. J. Sepkoski Jr., M. G. Sommers, P. J. Wagner, A. Webber
Thor A. Hansen
Global diversity curves reflect more than just the number of taxa that have existed through time: they also mirror variation in the nature of the fossil record and the way the record is reported. These sampling effects are best quantified by assembling and analyzing large numbers of locality-specific biotic inventories. Here, we introduce a new database of this kind for the Phanerozoic fossil record of marine invertebrates. We apply four substantially distinct analytical methods that estimate taxonomic diversity by quantifying and correcting for variation through time in the number and nature of inventories. Variation introduced by the use of two …