Physical Sciences and Mathematics Commons^™

Distinction Of Deforestation Drivers In The Amazon Using Synthetic Aperture Radar (Sar) Data, Andrea Nicolau, Africa Flores, Robert Griffin, Kelsey Herndon

Von Braun Symposium Student Posters

No abstract provided.

Image Labeler: Label Earth Science Images For Machine Learning, Ashish Acharya, Iksha Gurung, Brian Freitag, Manil Maskey, Rahul Ramachandran

Von Braun Symposium Student Posters

No abstract provided.

Identifying Irrigated Agriculture Land Using Remote Sensing And Machine Learning, Ryann Firestine, Cameron Handyside, Tamseel Syed, Leiqiu Hu

Von Braun Symposium Student Posters

No abstract provided.

Evaluating The Atmosphere-Land Exchange Inverse Evaporative Stress Index For The Alaskan Environment To Determine Wildfire Likelihood, Christine Evans, Ryan Marshman, Brianna Santallana, Robert Griffin

Von Braun Symposium Student Posters

No abstract provided.

Evaluating Drought Indices For Early Warning In East And Southern Africa, Sara Miller

Von Braun Symposium Student Posters

No abstract provided.

Overview Of The System Integration Lab And Its Role In The Space Launch System, Matthew Pickard, David Rose

Von Braun Symposium Student Posters

No abstract provided.

Hydrafloods Near Real-Time Mapping Of Flood Events Using Multiple Satellite Sensors, Claire Nauman

Von Braun Symposium Student Posters

No abstract provided.

Polarized X-Ray Sources For Calibration Of The Ixpe X-Ray Telescopes, Samantha Johnson, Wayne Baumgartner

Von Braun Symposium Student Posters

No abstract provided.

Radio Frequency Based Multi-Source Positioning In Indoor Environments, Vishal Perekadan, Tathagata Mukherjee

Von Braun Symposium Student Posters

No abstract provided.

Pixel-Based Model For High Latitude Dust Detection, George Priftis, Brian Freitag, Muthukumaran Ramasubramanian, Iksha Gurung, Manil Maskey, Rahul Ramachandran

Von Braun Symposium Student Posters

No abstract provided.

The Design And Testing Of A Gamma-Neutron Spectrometer For The Helen Project, Everett Cavanaugh, Christopher Helmerich, Sean Widmier, Sarah Dangelo

Von Braun Symposium Student Posters

No abstract provided.

The Evolution And Et Transition Of Tropical Cyclones During The 2017 Hurricane Seasonfrom A Lightning And Precipitation Perspective, Lena Heuscher, Patrick Gatlin

Von Braun Symposium Student Posters

No abstract provided.

Wavelength Calibration Of The Full-Sun Ultraviolet Rocket Spectrometer (Furst), Nicolas Donders, Amy Winebarger, Charles Kankelborg, Genevieve Vigil, Ken Kobayashi, Laurel Rachmeler, Gary Zank

Von Braun Symposium Student Posters

No abstract provided.

Utilizing Lidar To Quantify Aboveground Tree Biomass Within An Urban University, Maggi Klug, Robert Griffin, Emil Cherrington, Thomas Sever

Von Braun Symposium Student Posters

No abstract provided.

Developing Spatially Accurate Rainfall Predictions For The San Francisco Bay Area Through Case Studies Of Atmospheric River And Other Synoptic Events, Alison Bridger, Dung Nguyen, Sen Chiao

Faculty Publications, Meteorology and Climate Science

Rainfall patterns in the San Francisco Bay Area (SFBA) are highly influenced by local topography. It has been a forecasting challenge for the main US forecast models. This study investigates the ability of the Weather Research and Forecasting (WRF) model to improve upon forecasts, with particular emphasis on the rain shadow common to the southern end of the SFBA. Three rain events were evaluated: a mid-season atmospheric river (AR) event with copious rains; a typical non-AR frontal passage rain event; and an area-wide rain event in which zero rain was recorded in the southern SFBA. The results show that, with …

Stakeholders’ Perceptions Of Geographical Criteria For Loblolly Pine Management For Bioenergy Production In Virginia, Meghann Smith, Gia Nguyen, Taylor Wieczerak, Bernabas Wolde, Pankaj Lal, John Munsell

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

This study analyzed the perceptions of four stakeholder groups (forest landowners, private forest consultants, forest management researchers or educators, and federal or state agency foresters), regarding their management practices and preferred geographic growing conditions of loblolly pine in Virginia by combining AHP (analytical hierarchy process) and regression modeling. By ranking the importance of different geographical conditions for managing loblolly pine, we aimed to identify ways to support loblolly growth as a potential feedstock for biofuel generation. We achieved this through collecting survey responses from 43 stakeholders during the 2019 Virginia Forestry Summit. The results showed that the landowner, researcher/educator, and …

9th Annual Postdoctoral Science Symposium, University Of Texas Md Anderson Cancer Center Postdoctoral Association

Annual Postdoctoral Science Symposium Abstracts

The mission of the Annual Postdoctoral Science Symposium (APSS) is to provide a platform for talented postdoctoral fellows throughout the Texas Medical Center to present their work to a wider audience. The MD Anderson Postdoctoral Association convened its inaugural Annual Postdoctoral Science Symposium (APSS) on August 4, 2011.

The APSS provides a professional venue for postdoctoral scientists to develop, clarify, and refine their research as a result of formal reviews and critiques of faculty and other postdoctoral scientists. Additionally, attendees discuss current research on a broad range of subjects while promoting academic interactions and enrichment and developing new collaborations.

Theoretical Studies Of Ir And Nmr Spectral Changes Induced By Sigma-Hole Hydrogen, Halogen, Chalcogen, Pnicogen, And Tetrel Bonds In A Model Protein Environment, Mariusz Michalczyk, Wiktor Zierkiewicz, Rafał Wysokiński, Steve Scheiner

Chemistry and Biochemistry Faculty Publications

Various types of σ-hole bond complexes were formed with FX, HFY, H₂FZ, and H₃FT (X = Cl, Br, I; Y = S, Se, Te; Z = P, As, Sb; T = Si, Ge, Sn) as Lewis acid. In order to examine their interactions with a protein, N-methylacetamide (NMA), a model of the peptide linkage was used as the base. These noncovalent bonds were compared by computational means with H-bonds formed by NMA with XH molecules (X = F, Cl, Br, I). In all cases, the A–F bond, which lies opposite the base and is responsible for …

Empirical Mappings Of The Frequency Response Of An Electron Ratchet To The Characteristics Of The Polymer Transport Layer, Mohamad S. Kodaimati, Ofer Kedem, George C. Schatz, Emily A. Weiss

Chemistry Faculty Research and Publications

Flashing electron ratchets oscillate a periodic asymmetric potential to rectify nondirectional forces and thereby produce directional transport of electrons with zero source-drain bias. The relationship between the oscillation frequency of the potential and the ratchet (short-circuit) current reflects microscopic mechanisms of charge transport within the device. This paper describes experimental mappings of the “optimal frequency(ies)” of the ratchet f_peak—the oscillation frequencies that produce the largest ratchet current—to the carrier concentration, n_h, and to the linear field effect transistor mobility, μ_h, for a poly(3-hexylthiophene-2,5-diyl) (P3HT) transport layer. Measurements on multiple devices, multiple P3HT films per …

Editorial Introduction To The Northeast Journal Of Complex Systems (Nejcs), Hiroki Sayama, Georgi Georgiev

Northeast Journal of Complex Systems (NEJCS)

Editorial Introduction to the Northeast Journal of Complex Systems (NEJCS)

Fractality And Power Law Distributions: Shifting Perspectives In Educational Research, Matthijs Koopmans

Northeast Journal of Complex Systems (NEJCS)

The dynamical character of education and the complexity of its constituent relationships have long been recognized, but the full appreciation of the implications of these insights for educational research is recent. Most educational research to this day tends to focus on outcomes rather than process, and rely on conventional cross-sectional designs and statistical inference methods that do not capture this complexity. This presentation focuses on two related aspects not well accommodated by conventional models, namely fractality (self-similarity, scale invariance) and power law distributions (an inverse relationship between frequency of occurrence and strength of response). Examples are presented for both phenomena …

Effect Of Salinity Stress And Microbial Inoculations On Glomalin Production And Plant Growth Parameters Of Snap Bean (Phaseolus Vulgaris), Claudia Lyl Garcia, Sanku Dattamudi, Saoli Chanda, Krish Jayachandran

Department of Earth and Environment

Salinity is a major abiotic stress that can adversely affect plant growth, yield, other physiological parameters, and soil health. Salinity stress on biomass production of salt-sensitive crops, like snap bean (Phaseolus vulgaris), is a serious problem, and specifically in South Florida, USA, where saline soils can be found in major agricultural lands. Research studies focused on the ‘snap bean–Rhizobium–arbuscular mycorrhizal fungi (AMF)’ relationship under salinity stress are limited, and fewer studies have evaluated how this tripartite symbiosis affects glomalin production (GRSP), a glycoprotein released by AMF. A shade house experiment was conducted to elucidate the effects of three microbial inoculations …

Stormwater Treatment Effectiveness Of Established Bioretention Facilities In Portland, Oregon, Emma Rose Kohlsmith

Dissertations and Theses

Bioretention systems are commonly used to treat and detain stormwater runoff and help mitigate for many negative effects of urbanization. Despite the widespread use of bioretention systems, few field-based studies have assessed how these facilities affect water quality many years after installation. The goal of this project is to assess the pollution reduction effectiveness of lined bioretention facilities that have been in use and functioning for 4-8 years. To meet this objective, this project measured water quality characteristics of stormwater flowing into and out of seven facilities installed throughout Portland, Oregon during real storm events. Stormwater grab samples were taken …

Predicting Economic Optimal Nitrogen Rate With The Anaerobic Potentially Mineralizable Nitrogen Test, Jason D. Clark, Fabián G. Fernández, Kristen S. Veum, James J. Camberato, Paul R. Carter, Richard B. Ferguson, David W. Franzen, Daniel E. Kaiser, Newell R. Kitchen, Carrie A. M. Laboski, Emerson D. Nafziger, Carl J. Rosen, John E. Sawyer, John F. Shanahan

John E. Sawyer

Estimates of mineralizable N with the anaerobic potentially mineralizable N (PMN_an) test could improve predictions of corn (Zea mays L.) economic optimal N rate (EONR). A study across eight US midwestern states was conducted to quantify the predictability of EONR for single and split N applications by PMN_an. Treatment factors included different soil sample timings (pre-plant and V5 development stage), planting N rates (0 and 180 kg N ha⁻¹), and incubation lengths (7, 14, and 28 d) with and without initial soil NH₄–N included with PMN_an. Soil was sampled …

United States Midwest Soil And Weather Conditions Influence Anaerobic Potentially Mineralizable Nitrogen, Jason D. Clark, Kristen S. Veum, Fabián G. Fernández, James J. Camberato, Paul R. Carter, Richard B. Ferguson, David W. Franzen, Daniel E. Kaiser, Newell R. Kitchen, Carrie A. M. Laboski, Emerson D. Nafziger, Carl J. Rosen, John E. Sawyer, John F. Shanahan

John E. Sawyer

Nitrogen provided to crops through mineralization is an important factor in N management guidelines. Understanding of the interactive effects of soil and weather conditions on N mineralization needs to be improved. Relationships between anaerobic potentially mineralizable N (PMN_an) and soil and weather conditions were evaluated under the contrasting climates of eight US Midwestern states. Soil was sampled (0–30 cm) for PMN_an analysis before pre-plant N application (PP_0N) and at the V5 development stage from the pre-plant 0 (V5_0N) and 180 kg N ha⁻¹ (V5_180N) rates and incubated for 7, 14, …

Zero Waste, Spring/Summer 2017, Issue 36

Sustain Magazine

No abstract provided.

Consent Decrees, Fall/Winter 2017, Issue 35

Sustain Magazine

No abstract provided.

Human Ecology, Spring/Summer 2016, Issue 34

Sustain Magazine

No abstract provided.

Citizen Science, Fall/Winter 2016, Issue 33

Sustain Magazine

No abstract provided.

Urban Streams, Spring/Summer 2015, Issue 32

Sustain Magazine

No abstract provided.