Auroral Heating Of Plasma Patches Due To High-Latitude Reconnection,
2021
Boston University
Auroral Heating Of Plasma Patches Due To High-Latitude Reconnection, Joaquin Diaz Pena, Matthew Zettergren, Joshua Semeter, Yukitoshi Nishimura, Roger Varney, Ashton Reimer, Marc Hairston, Michael Hirsch, Olga Verkhoglyadova, Keisuke Hosokawa, Kazuo Shiokawa
Publications
This study exploits the volumetric sampling capabilities of the Resolute Bay Incoherent Scatter Radar (RISR-N) in collaboration with all-sky imagery and in-situ measurements (DMSP) to examine the interplay between cold plasma transport and auroral precipitation during a high-latitude lobe reconnection event on the dawn side. The IMF had an impulsive negative excursion in B$_z$ embedded within a prolonged period of B$_z>0$ and B$_y
Lecture Notes On Modern Multivariate Statistical Learning-Version Iv,
2021
Iowa State University and Analytics Iowa LLC
Lecture Notes On Modern Multivariate Statistical Learning-Version Iv, Stephen B. Vardeman
Statistics Publications
This set of notes is the most recent reorganization and update-in- progress of Modern Multivariate Statistical Learning course material de- veloped 2009-2020 over 7 offerings of PhD-level courses and 4 offerings of an MS-level course in the Iowa State University Statistics Department, a short course given in the Statistics Group at Los Alamos National Lab, and two offered through Statistical Horizons LLC. Early versions of the courses were based mostly on the topics and organization of The Elements of Statistical Learning by Hastie, Tibshirani, and Friedman, though very substantial parts benefited from Izenman's Modern Multivariate Statis- tical Techniques, and ...
Study On The Current Dituation Of Caragana Seed Pests And Their Methods Of Invasion In Inner Mongolia,
2021
Grassland Investigation and Design Institute, China
Study On The Current Dituation Of Caragana Seed Pests And Their Methods Of Invasion In Inner Mongolia, Hua Jin, Qisu Xing, Gaowa Leng
International Grassland Congress Proceedings
No abstract provided.
Effects Of Different Colored Sticky Traps On Capture Of Alfafa Thrips,
2021
Xinjiang Agricultural University, China
Effects Of Different Colored Sticky Traps On Capture Of Alfafa Thrips, Li Zhao, Ling Zhang, Feng Wang
International Grassland Congress Proceedings
No abstract provided.
Effects On Bird Cherry‐Oat Aphid Resistance To Drunken Horse Grass By Neotyphodium Endophyte Infection,
2021
Lanzhou University, China
Effects On Bird Cherry‐Oat Aphid Resistance To Drunken Horse Grass By Neotyphodium Endophyte Infection, Xingxu Zhang, Chunjie Li
International Grassland Congress Proceedings
No abstract provided.
Forecast Of Alfalfa Yield Losses Caused By Leaf Spot Disease,
2021
Chinese Academy of Agricultural Sciences, China
Forecast Of Alfalfa Yield Losses Caused By Leaf Spot Disease, Liang Zeng, Qinghua Yuan
International Grassland Congress Proceedings
No abstract provided.
Data From: Novel Strongly Correlated Europium Superhydrides,
2021
Utah State University
Data From: Novel Strongly Correlated Europium Superhydrides, Alexander I. Boldyrev, Nikolay Tkachenko
Browse all Datasets
We conducted a joint experimental–theoretical investigation of the high-pressure chemistry of europium polyhydrides at pressures of 86–130 GPa. We discovered several novel magnetic Eu superhydrides stabilized by anharmonic effects: cubic EuH9, hexagonal EuH9, and an unexpected cubic (Pm3n) clathrate phase, Eu8H46. Monte Carlo simulations indicate that cubic EuH9 has antiferromagnetic ordering with TN of up to 24 K, whereas hexagonal EuH9 and Pm3n-Eu8H46 possess ferromagnetic ordering with TC = 137 and 336 K, respectively. The electron–phonon interaction is weak in all studied europium hydrides, and their magnetic ordering excludes s-wave superconductivity, except, perhaps, for distorted pseudohexagonal EuH9. The ...
Data From: Chemical Bonding Analysis Of Excited States Using The Adaptive Natural Density Partitioning Method,
2021
Utah State University
Data From: Chemical Bonding Analysis Of Excited States Using The Adaptive Natural Density Partitioning Method, Alexander I. Boldyrev, Nikolay Tkachenko
Browse all Datasets
A novel approach to chemical bond analysis for excited states has been developed. Using an extended adaptive natural density partitioning method (AdNDP) as implemented in AdNDP 2.0 code, we obtained chemically intuitive bonding patterns for the excited states of H2O, B5+, and C2H4+ molecules. The deformation pathway in the excited states could be easily predicted based on the analysis of the chemical bond pattern. We expect that this new method of chemical bonding analysis would be very helpful for photochemistry, photoelectron spectroscopy, electron spectroscopy and other chemical applications that involved excited states.
Robust Lag Weighted Lasso For Time Series Model,
2021
University of Al-Qadisiyah, Iraq
Robust Lag Weighted Lasso For Time Series Model, Tahir R. Dikheel, Alaa Q. Yaseen
Journal of Modern Applied Statistical Methods
The lag-weighted lasso was introduced to deal with lag effects when identifying the true model in time series. This method depends on weights to reflect both the coefficient size and the lag effects. However, the lag weighted lasso is not robust. To overcome this problem, we propose robust lag weighted lasso methods. Both the simulation study and the real data example show that the proposed methods outperform the other existing methods.
Data From: Stability, Electronic, And Optical Properties Of Two-Dimensional Phosphoborane,
2021
Utah State University
Data From: Stability, Electronic, And Optical Properties Of Two-Dimensional Phosphoborane, Alexander I. Boldyrev, Nikolay Tkachenko
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The structure and properties of two-dimensional phosphoborane sheets were computationally investigated using Density Functional Theory calculations. The calculated phonon spectrum and band structure point to dynamic stability and allowed characterization of the predicted two-dimensional material as a direct-gap semiconductor with a band gap of ~1.5 eV. The calculation of the optical properties showed that the two-dimensional material has a relatively small absorptivity coefficient. The parameters of the mechanical properties characterize the two-dimensional phosphoborane as a relatively soft material, similar to the monolayer of MoS2. Assessment of thermal stability by the method of molecular dynamics indicates sufficient stability of the ...
Data From: A Sandwich-Type Cluster Containing Ge@Pd3 Planar Fragment Flanked By Aromatic Nonagermanide Caps,
2021
Utah State University
Data From: A Sandwich-Type Cluster Containing Ge@Pd3 Planar Fragment Flanked By Aromatic Nonagermanide Caps, Alexander I. Boldyrev, Nikolay Tkachenko
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Sandwich-type clusters with the planar fragment containing a heterometallic sheet have remained elusive. In this work, we introduce the [K(2,2,2-crypt)]4{(Ge9)2[η6-Ge(PdPPh3)3]} complex that contains a heterometallic sandwich fragment. The title compound is structurally characterized by means of single-crystal X-ray diffraction, which reveals the presence of an unusual heteroatomic metal planar fragment Ge@Pd3. The planar fragment contains a rare formal zerovalent germanium core and a peculiar bonding mode of sp2-Ge@(PdPPh3)3 trigonal planar structure, whereas the nonagermanide fragments act as capping ligands. The chemical bonding pattern of the planar fragment consists ...
Avulsions Drive Ecosystem Services And Economic Changes In The Brazilian Pantanal Wetlands,
2021
Universidade Federal de Mato Grosso do Sul, Brazil
Avulsions Drive Ecosystem Services And Economic Changes In The Brazilian Pantanal Wetlands, Rômullo O. Louzada, Ivan Bergier, Fabio O. Roque, Michael M. Mcglue, Aguinaldo Silva, Mario L. Assine
Earth and Environmental Sciences Faculty Publications
The Pantanal wetland is a mosaic of landscapes that brings together rich biodiversity with the valuable activities of fishing, tourism and ranching. Human occupation and land use in the headwaters have intensified the rate of channel avulsions in the lower reaches of the largest megafan on the Taquari River. This study evaluates the long-term changes of landscapes in the active depositional lobe of the Taquari megafan from the perspective of local communities of pantaneiros. Maps derived from multiple decades of multispectral Landsat data have proven useful for studying land cover changes through the relationship between dry (terrestrial vegetation and soil ...
Covid-19: A One Health Issue,
2021
Lincoln Memorial University
Covid-19: A One Health Issue, Karen Gruszynski
Cumberland Mountain Naturalist
COVID-19 has very rapidly become part of modern societal lexicon as the disease highlights the importance understanding zoonotic diseases and the impact they can have on human life. With a 177million human cases and 3.82million deaths globally at the time of this publication, the "One Health" nature of the disease has had a lasting impact across the planet. As the disease spread rapidly, it highlighted the dissemination of information through social media and other sources. With this in mind, Dr. Gary Vroegindewey, Director for One Health at LMU-CVM, put forth the idea to have students collect and summarize information ...
Numeric And Dynamic B-Stability, Exact-Monotone And Asymptotic Two-Point Behavior Of Theta Methods For Stochastic Differential Equations,
2021
Southern Illinois University, Carbondale, IL 62901, USA
Numeric And Dynamic B-Stability, Exact-Monotone And Asymptotic Two-Point Behavior Of Theta Methods For Stochastic Differential Equations, Henri Schurz
Journal of Stochastic Analysis
No abstract provided.
Mining Energy Consumption As A Function Of Ore Grade Decline: The Case Of Lead And Zinc,
2021
CIRCE Institute - Universidad de Zaragoza
Mining Energy Consumption As A Function Of Ore Grade Decline: The Case Of Lead And Zinc, Ricardo Magdalena, Alicia Valero, Jose-Luis Palacios, Antonio Valero
Journal of Sustainable Mining
Demand for raw materials is increasing exponentially. To satisfy that demand, more minerals need to be mined from the Earth’s crust. As a result, minerals are being exhausted, and ore grades decline. Lower ore grade mines also mean more energy, which in turn entails fossil fuel emissions and more climate change. This paper estimates the specific energy for the beneficiation process of metals lead and zinc as case studies. The evaluation is performed with specialized software, HSC Chemistry which assesses the specific energy for every stage: comminution, flotation, and refining. Different scenarios have been established to simulate the behavior ...
The Allelopathy Of 3 Companion Weeds With Alfalfa,
2021
Southwest University, China
The Allelopathy Of 3 Companion Weeds With Alfalfa, Y. L. Yin, H. X. Li, J. Wang, D. S. Zhang, Y. X. Yu, Z. Q. Qi
International Grassland Congress Proceedings
No abstract provided.
Molecular Authentication Of The Eospalax Of Myospalax By Analyzing Cytochrome B Sequences,
2021
Chinese Academy of Agricultural Sciences, China
Molecular Authentication Of The Eospalax Of Myospalax By Analyzing Cytochrome B Sequences, Hongshan Yang, Genzhu Chang, Xiaoqin He
International Grassland Congress Proceedings
No abstract provided.
Spatial Heterogeneity Of The Weed Community In A Manilagrass Lawn,
2021
South China Agricultural University, China
Spatial Heterogeneity Of The Weed Community In A Manilagrass Lawn, Xinming Xie, Wei Tang, Pinting Zhong, Masae Shiyomi
International Grassland Congress Proceedings
No abstract provided.
A Study Of Stable Isotopes In Snow On Mt. Hood, Oregon,
2021
Portland State University
A Study Of Stable Isotopes In Snow On Mt. Hood, Oregon, Maya Felix
University Honors Theses
Over the 2020-2021 Winter, event-based and end-of-season snow samples were collected on Mt. Hood near Government Camp, OR and analyzed for their stable isotopic compositions of 18O and 2H. It was found that surficial snow collected through the winter had higher variation in isotopic values than samples from a snow pit collected in spring. This suggests homogenization occurred in the snowpack over the season from snow metamorphism, sublimation, and/or melting. Homogenization of the snowpack will likely become more pronounced as temperatures increase and rain falls more often than snow due to climate change. Research that utilizes the ...
Case Study Of Scrum Methodology As Used By A Capstone Team,
2021
Portland State University
Case Study Of Scrum Methodology As Used By A Capstone Team, Lilly I. Yeaton
University Honors Theses
Scrum is widely used in the software industry to manage all kinds of projects. This case study examines the way in which a capstone team used the methodology and models the specific project management processes they used over the course of their project. These models and the process modifications therein are then compared to the team’s velocity at different points in the project. The results of this analysis suggest a correlation between asynchronous daily meetings and sprint reviews and improved velocity.
