Search Results - "Gerken, E."

Heterotic-string amplitudes at one loop: modular graph forms and relations to open strings by Gerken, Jan E., Kleinschmidt, Axel, Schlotterer, Oliver

“…A bstract We investigate one-loop four-point scattering of non-abelian gauge bosons in heterotic string theory and identify new connections with the…”
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All-order differential equations for one-loop closed-string integrals and modular graph forms by Gerken, Jan E., Kleinschmidt, Axel, Schlotterer, Oliver

“…A bstract We investigate generating functions for the integrals over world-sheet tori appearing in closed-string one-loop amplitudes of bosonic, heterotic and…”
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Holomorphic subgraph reduction of higher-point modular graph forms by Gerken, Jan E., Kaidi, Justin

“…A bstract Modular graph forms are a class of modular covariant functions which appear in the genus-one contribution to the low-energy expansion of closed…”
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Generating series of all modular graph forms from iterated Eisenstein integrals by Gerken, Jan E., Kleinschmidt, Axel, Schlotterer, Oliver

“…A bstract We study generating series of torus integrals that contain all so-called modular graph forms relevant for massless one-loop closed-string amplitudes…”
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Human Impact on Freshwater Ecosystem Services: A Global Perspective by Dodds, Walter K, Perkin, Joshuah S, Gerken, Joseph E

“…Human environmental change influences freshwaters as well as the regulating, provisioning, and cultural services that ecosystems provide worldwide. Here, we…”
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Telescopic imaging of sprites by Gerken, E. A., Inan, U. S., Barrington-Leigh, C. P.

“…Telescopic images of sprites show a wide variety of generally vertical but also slanted fine structure, including branching tree‐like shapes and well defined…”
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Ionospheric modification at twice the electron cyclotron frequency by DJUTH, F. T, PEDERSEN, T. R, GERKEN, E. A, BERNHARDT, P. A, SELCHER, C. A, BRISTOW, W. A, KOSCH, M. J

“…In 2004, a new transmission band was added to the HAARP high-frequency ionospheric modification facility that encompasses the second electron cyclotron…”
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Collaborative Learning about Forest Understory Restoration and Management: Identifying Goals and Sharing Knowledge by Golay, Michaeleen E Gerken, Bice, Philip M, Thompson, Jan R

“…Ecosystem services provided by forests (e.g., nutrient cycling) are critical in midwestern landscapes. We conducted collaborative workshops with forest…”
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Temporal evolution of pump beam self-focusing at the High-Frequency Active Auroral Research Program by Kosch, M. J., Pedersen, T., Mishin, E., Starks, M., Gerken-Kendall, E., Sentman, D., Oyama, S., Watkins, B.

“…On 4 February 2005 the High‐Frequency Active Auroral Research Program (HAARP) facility was operated at 2.85 MHz to produce artificial optical emissions in the…”
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Diffeomorphic Counterfactuals With Generative Models by Dombrowski, Ann-Kathrin, Gerken, Jan E., Muller, Klaus-Robert, Kessel, Pan

“…Counterfactuals can explain classification decisions of neural networks in a human interpretable way. We propose a simple but effective method to generate such…”
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Magnetic zenith enhancement of HF radio-induced airglow production at HAARP by Pedersen, T. R., McCarrick, M., Gerken, E., Selcher, C., Sentman, D., Carlson, H. C., Gurevich, A.

“…Airglow production at various beam positions relative to the magnetic field was investigated as part of an optics campaign at HAARP in February 2002. Strong…”
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Geometric deep learning and equivariant neural networks by Gerken, Jan E., Aronsson, Jimmy, Carlsson, Oscar, Linander, Hampus, Ohlsson, Fredrik, Petersson, Christoffer, Persson, Daniel

“…We survey the mathematical foundations of geometric deep learning, focusing on group equivariant and gauge equivariant neural networks. We develop gauge…”
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Artificial optical emissions at HAARP for pump frequencies near the third and second electron gyro-harmonic by KOSCH, M. J, PEDERSEN, T, HUGHES, J, MARSHALL, R, GERKEN, E, SENIOR, A, SENTMAN, D, MCCARRICK, M, DJUTH, F. T

“…High-power high-frequency radio waves beamed into the ionosphere cause plasma turbulence, which can accelerate electrons. These electrons collide with the…”
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Streamers and diffuse glow observed in upper atmospheric electrical discharges by Gerken, E., Inan, U.

“…A telescopic imaging system was designed to observe fine structure in high-altitude lightning-related electrical discharges known as "sprites". Hundreds of…”
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Prevalence of parasitism in the Grotto Sculpin (Cottus specus), a new species of cave-adapted fish from southeastern Missouri, USA by Day, Julie, Starkey, David E., Gerken, Joseph E.

“…Acanthocephalan parasites infecting the newly described Grotto Sculpin ( Cottus specus ), a state-threatened and federally endangered troglomorphic fish…”
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Comparison of photometric measurements and charge moment estimations in two sprite-producing storms by Gerken, E. A., Inan, U. S.

“…In one relatively small storm on July 2, 2000, 276 sprites were observed between 04:00–07:00 UT. These sprites were largely confined to 70–85 km altitude, were…”
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Channel morphology and flow structure of an abandoned channel under varying stages by Costigan, Katie H., Gerken, Joseph E.

“…Abandoned channels are those channels left behind as meandering rivers migrate over their floodplains and remain among the most enigmatic features of the…”
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Effects of Invasive Shrubs on the Herbaceous Community in a Mixed Forest by Phillips, Rose Neumeyer, Golay, Michaeleen E. Gerken

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Multiple Nuclear Localization Sequences Allow Modulation of 5‐Lipoxygenase Nuclear Import by Luo, Ming, Pang, C. W. Mark, Gerken, Alison E., Brock, Thomas G.

“…The nuclear import of proteins typically requires the presence of a nuclear localization sequence (NLS). Some proteins have more than one NLS, but the…”
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Restoring Nutrient Capture in Forest Herbaceous Layers of the Midwest (Iowa) by Gerken, Michaeleen E., Thompson, Janette R., Mabry, Cathy M.

“…In this study, a follow-up to our previous work, we seek to identify a set of key spring-growing herbaceous species to restore to degraded forests or recently…”
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