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Articles 11911 - 11940 of 302419
Full-Text Articles in Physical Sciences and Mathematics
The Ulster Grassland Society, J. Morrison
The Ulster Grassland Society, J. Morrison
IGC Proceedings (1993-2023)
Northern Ireland is a grass-growing region. Grassland accounts for 92% of the area farmed (excluding hill land). So the great majority of farm businesses in the Province are, at least partly, dependent on grass as a source of ruminant feed and grassland farming makes a major impact on the environment and landscape of the Province.
The Ulster Grassland Society was formed in response to a realisation that grass should be treated as a crop in its own right with potential to produce high output in higher rainfall areas which include Northern Ireland. Although there had been informal meetings held since …
The Role Of Grassland Societies In The West Of Scotland, G. E. D. Tiley
The Role Of Grassland Societies In The West Of Scotland, G. E. D. Tiley
IGC Proceedings (1993-2023)
Local grassland societies were first established in the United Kingdom in the 1950s, under the guiding hand of the national, British Grassland Society, itself founded in 1946. In the west of Scotland two local societies were formed: 1) the South West Scotland Grassland Society in 1962, covering the former counties of Ayrshire, Dumfries, Kirkcudbright and Wigtown; and 2) the Central Scotland Grassland Society for Lanark, Stirling, Renfrew, Dumbarton and Clackmannan. The declared aim of these two societies was to promote good grassland farming in all its aspects amongst members and to identify opportunities for improved grassland management, all to the …
The Leucaena Network: A Grazier Advocacy Organisation Ensuring The Future Of A Valuable Forage Resource For Northern Australia, K. Mclaughlin, B. F. Mullen, H. M. Shelton
The Leucaena Network: A Grazier Advocacy Organisation Ensuring The Future Of A Valuable Forage Resource For Northern Australia, K. Mclaughlin, B. F. Mullen, H. M. Shelton
IGC Proceedings (1993-2023)
Leucaena leucocephala is a productive and sustainable forage tree legume for beef cattle production in northern Australia. Following a protracted period of research and development to overcome agronomic and social constraints, substantial adoption by graziers is now occurring (Mullen, these proceedings). However, a recent challenge has threatened future development, viz. the perception by some environmentalists that leucaena is an environmental weed. In addition, production-oriented support from public research and development organisations has diminished significantly over the past 20 years. The Leucaena Network (TLN) was formed in July 2000, primarily to counter the anti-leucaena movement, but has since developed as an …
The Lotus Newsletter: An Electronic Lotus Research Community, Mónica Rebuffo
The Lotus Newsletter: An Electronic Lotus Research Community, Mónica Rebuffo
IGC Proceedings (1993-2023)
The Lotus Newsletter (LN) was created by Dr. W.F. Grant (former editor) in 1971, integrating scientists working on diverse aspects of research on Lotus spp. The LN received further impetus under the editorship of Dr. P.R. Beuselinck, who shaped the electronic version (http://www.psu.missouri.edu/lnl/). The newsletter aims to provide a vehicle for the exchange of information where opinions, in addition to established facts, can be presented. One of the strengths of the LN has been the lead article for each issue and the extensive bibliographic listing published every year, which facilitates access to recent literature. As a …
Grassland Technology Interaction And Policy Evolution In Canada, Duane H. Mccartney, P. Jefferson
Grassland Technology Interaction And Policy Evolution In Canada, Duane H. Mccartney, P. Jefferson
IGC Proceedings (1993-2023)
Canada is the world's second largest country covering approximately 10 million km2 (McCartney & Horton, 1997). About 90% of Canada is uninhabited with 90 percent of Canadians living within 500 km of the American border. The forage resources used by livestock grazing and the production of forage crops covers over 36 million ha of Canada's land base (3.6%) and is divided into 72% native range (26 million ha), 11% cultivated pastures (4 million ha) and 17% forage crops (6 million ha) There are 25 million ha in grain and oilseed crops (McCartney & Horton, 1997).
The Great Mission Of The Chinese Grassland Society: Grassland Strategic Research, F. Hong
The Great Mission Of The Chinese Grassland Society: Grassland Strategic Research, F. Hong
IGC Proceedings (1993-2023)
The Chinese Grassland Society (CGS) was founded in 1979 in Beijing. Since 1991, it has become a national science society authorised by the State Ministry of Civil Affairs. The basic task of CGS is to unite the national grassland scientists and technicians for academic exchanges at home and abroad, to popularise grassland science, to train qualified personnel for the further development of grassland science and to accelerate the development of grassland science. The Society is affiliated with ten professional committees and sponsors the academic journals: Acta Agrestia Sinica, Acta Prataculturae Sinica and China Grassland.
Effect Of Morphology And An Upstream Tall Building On A Street Canyon Flow, Haoran Du
Effect Of Morphology And An Upstream Tall Building On A Street Canyon Flow, Haoran Du
Electronic Thesis and Dissertation Repository
The effects of the morphological model and the existence of an upstream tall building on the turbulent street canyon flow and the overlying boundary layer are investigated in a wind tunnel, using Stereoscopic Particle Image Velocimetry (S-PIV) measurements. The velocity variances, Reynolds shear stress, and turbulent kinetic energy are found to be larger than in a similar idealized street canyon model. Increasing building height results in a decrease in vertical mass fluxes across the opening of the canyon, at least in the canyon portion directly downstream of the building. The interaction between the large-scale structures in the overlying boundary layer …
The Radical Imagination: Exploring The Intersection Of The Youth-Led Climate Justice Movement And Education, Calla Sneller
The Radical Imagination: Exploring The Intersection Of The Youth-Led Climate Justice Movement And Education, Calla Sneller
Capstone Collection
This paper explores the crossover of the youth-led climate justice movement and education, utilizing The Experiment Digital Climate Change & the Environment as a case study to investigate this crossover globally and locally. A 6-week virtual exchange program designed to connect 100 high school students from 23 countries, The Experiment Digital Climate Change & the Environment aimed to equip youth with radical tools to address the scale of the climate crisis. The study drew on the neo-institutionalism and systems thinking approaches to globalization. Employing qualitative research methods, including a questionnaire and individual interviews, the findings revealed that international relationships improved …
Leveraging Non-Covalent Interactions Between Small Organic Molecules And Inorganic Scaffolds In The Design Of Advanced Materials, Jonathan Lefton
Leveraging Non-Covalent Interactions Between Small Organic Molecules And Inorganic Scaffolds In The Design Of Advanced Materials, Jonathan Lefton
Chemistry Theses and Dissertations
Powder diffraction is a powerful tool for studying crystal structures, especially as it relates to interactions of small organic molecules with inorganic compounds. The first part of this dissertation involves small organic ligands interacting with metal-organic framework, MOF-74. The first and simplest iteration involves the crystal structure solution of a neat, liquid loading of n-propylmercaptan to the open metal sites within the MOF-74 pores. Later studies investigate the leveraging of a similarly sized bitopic ligand in the solution loading of 1,2-ethanedithiol, which results in the amorphization of MOF-74. Having no crystallinity, amorphous or severely defected materials can be a …
The Investigation Of Singlet Fission From The Perspective Of Hierarchy Of Pure States (Hops), Tao (James) Chen
The Investigation Of Singlet Fission From The Perspective Of Hierarchy Of Pure States (Hops), Tao (James) Chen
Chemistry Theses and Dissertations
This thesis provides a preliminary investigation of singlet fission from the perspective of Hierarchy of pure states (HOPS), which provides a numerical exact solution for the investigation of a series of open quantum systems. Since the inception of the concept of singlet fission about half a century ago, this photo-physical process has attracted the attention of a multitude of researchers and has been extensively studied theoretically and experimentally. However, these previous methods for the investigation of singlet fission focus more or less on tackling the underlying mechanisms of singlet fission from the perspective of perturbation. So far, the HOPS method …
The Investigation Of Singlet Fission From The Perspective Of Hierarchy Of Pure States (Hops), Tao (James) Chen
The Investigation Of Singlet Fission From The Perspective Of Hierarchy Of Pure States (Hops), Tao (James) Chen
Chemistry Theses and Dissertations
This thesis provides a preliminary investigation of singlet fission from the perspective of Hierarchy of pure states (HOPS), which provides a numerical exact solution for the investigation of a series of open quantum systems. Since the inception of the concept of singlet fission about half a century ago, this photo-physical process has attracted the attention of a multitude of researchers and has been extensively studied theoretically and experimentally. However, these previous methods for the investigation of singlet fission focus more or less on tackling the underlying mechanisms of singlet fission from the perspective of perturbation. So far, the HOPS method …
Study Of Radiation Effects In Gan-Based Devices, Han Gao
Study Of Radiation Effects In Gan-Based Devices, Han Gao
Electrical Engineering Theses and Dissertations
Radiation tolerance of wide-bandgap Gallium Nitride (GaN) high-electron-mobility transistors (HEMT) has been studied, including X-ray-induced TID effects, heavy-ion-induced single event effects, and neutron-induced single event effects. Threshold voltage shift is observed in X-ray irradiation experiments, which recovers over time, indicating no permanent damage formed inside the device. Heavy-ion radiation effects in GaN HEMTs have been studied as a function of bias voltage, ion LET, radiation flux, and total fluence. A statistically significant amount of heavy-ion-induced gate dielectric degradation was observed, which consisted of hard breakdown and soft breakdown. Specific critical injection level experiments were designed and carried out to explore …
Elucidating The Impacts Of Learning Communities On Retention, Student Sense Of Belonging, And Self-Efficacy In Stem, Honour Williams
Elucidating The Impacts Of Learning Communities On Retention, Student Sense Of Belonging, And Self-Efficacy In Stem, Honour Williams
Master of Science in Chemical Sciences Theses
Student sense of belonging (SoB) and self-efficacy (SE) are necessary aspects of promoting achievement and success in the STEM fields. This study focuses on how learning communities affect students' SoB and SE in relation to STEM as well as demographics, including race, gender, and first-generation status. Students enrolled in either the introductory chemistry lecture or the first-year experience course (students grouped by similar STEM major) were asked to complete a STEM attributes survey (Likert scale) to assess their overall SoB to the university and their chosen major as well as their level of SE in relations to those fields. To …
Mechanisms To Reduce Cyber Threats And Risks, Saad Alsuwaileh
Mechanisms To Reduce Cyber Threats And Risks, Saad Alsuwaileh
Journal of Police and Legal Sciences
Addressing the mechanisms of reducing cyber threats and risks Research Because cyberspace is an important arena for various international interactions, especially in recent times in light of the increase in cyber-attacks between some countries, which affects their national security. In this context, many countries are trying to make an effort to develop their capabilities to be used in any cyber-attack, or to take adequate preventive measures to protect them from any possible cyberattacks, especially in light of the impact of these attacks on vital places and institutions such as banks and ministries or on important facilities such as water and …
Conservation Laws And The Foundations Of Quantum Mechanics, Yakir Aharonov, Sandu Popescu, Daniel Rohrlich
Conservation Laws And The Foundations Of Quantum Mechanics, Yakir Aharonov, Sandu Popescu, Daniel Rohrlich
Mathematics, Physics, and Computer Science Faculty Articles and Research
In a recent paper, [Y. Aharonov, S. Popescu, D. Rohrlich, Proc. Natl. Acad. Sci. U.S.A.118 e1921529118 (2021)], it was argued that while the standard definition of conservation laws in quantum mechanics, which is of a statistical character, is perfectly valid, it misses essential features of nature and it can and must be revisited to address the issue of conservation/nonconservation in individual cases. Specifically, in the above paper, an experiment was presented in which it can be proven that in some individual cases, energy is not conserved, despite being conserved statistically. It was felt however that this is worrisome and …
Search For Higgs Boson Pair Production In The Multiple Lepton Final State Using Proton-Proton Collision Data At √S =13 Tev From The Atlas Detector, Santosh Parajuli
Search For Higgs Boson Pair Production In The Multiple Lepton Final State Using Proton-Proton Collision Data At √S =13 Tev From The Atlas Detector, Santosh Parajuli
Physics Theses and Dissertations
In this thesis, a search is presented for the production of Higgs boson pairs in final states containing three light leptons (e/mu). The analysis utilizes data collected by the ATLAS detector at the Large Hadron Collider from proton-proton (pp) collisions at a center-of-mass energy of √s=13 TeV, corresponding to an integrated luminosity of 140 fb-1. The investigation aims to identify any significant deviations from the expected background levels defined by the Standard Model. The Higgs boson, as the cornerstone of the electroweak symmetry breaking mechanism, plays a crucial role in our understanding of particle physics. Studying the production of Higgs …
Complexity Heliophysics: A [New] System Science That Transcends The Previous Boundaries Of Our Field, Ryan M. Mcgranaghan, Seebany Datta-Barua, Jeffrey Thayer, Joe Borovsky, Jay R. Johnson, Simon Wing, Dan Baker, Massimo Materassi
Complexity Heliophysics: A [New] System Science That Transcends The Previous Boundaries Of Our Field, Ryan M. Mcgranaghan, Seebany Datta-Barua, Jeffrey Thayer, Joe Borovsky, Jay R. Johnson, Simon Wing, Dan Baker, Massimo Materassi
Faculty Publications
Synopsis
1. The 21st century is the time of complexity. We delineate it and its importance as necessary to solve ‘wicked problems.’
2. Inherently transdisciplinary, trans-scale, and interconnected to living systems, the solution to Heliophysics’ identity crisis and to unlock the next generation of scientific discovery may be to embrace complexity.
3. With the right foresight, direction, and incentive over the next ten years, Heliophysics can become a beacon for how all of society thinks about and does complexity science.
Re: Comments On The Draft Butte Priority Soils Operable Unit (Bpsou) 2022 Draft Site- Wide Surface Water Monitoring Data Summary Report (Dated April 7, 2023), Nikia Greene
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Re: Conditional Approval For The Butte Priority Soils Operable Unit (Bpsou) Butte Reclamation Evaluation System (Bres) 2021 Annual Operations And Maintenance (O&M) Report, 2021 Bres Annual Summary Report For Work Completed In Quadrant 1 (Dated November 18, 2022), Nikia Greene
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Butte Priority Soils Operable Unit (Bpsou) Draft Final Insufficiently Reclaimed Sites – Field Sampling Plan (Fsp) Bres No. 84 – Mandan Park Play Area, Mike Mcanulty
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Draft Final 2023 Residential Metals Abatement Program (Rmap) Park Soil Sampling Field Sampling Plan (Fsp) Submittal #12 [Aldersgate United Methodist Church], Pioneer Technical Services, Inc.
Draft Final 2023 Residential Metals Abatement Program (Rmap) Park Soil Sampling Field Sampling Plan (Fsp) Submittal #12 [Aldersgate United Methodist Church], Pioneer Technical Services, Inc.
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
The Driving Effects Of Common Atmospheric Molecules For Formation Of Clusters: The Case Of Sulfuric Acid, Formic Acid, Hydrochloric Acid, Ammonia, And Dimethylamine, Olivia M. Longsworth, Conor J. Bready, George C. Shields
The Driving Effects Of Common Atmospheric Molecules For Formation Of Clusters: The Case Of Sulfuric Acid, Formic Acid, Hydrochloric Acid, Ammonia, And Dimethylamine, Olivia M. Longsworth, Conor J. Bready, George C. Shields
Open Access Fund Publications
One of the main sources of uncertainty for understanding global warming is understanding the formation of larger secondary aerosols. The beginning stages start with the formation of prenucleation complexes from precursor monomers of acids, bases, and organic molecules. The detailed interactions responsible for prenucleation and subsequent aerosol formation are difficult to decipher experimentally. We present a computational chemistry study of the interactions between three different acid molecules and two different bases. By combining a comprehensive search routine covering many thousands of configurations at the semiempirical level with high level quantum chemical calculations of approximately 1000 clusters for every possible combination …
Editorial, Al Asyary
Quantum Reality With Negative-Mass Particles, Mordecai Waegell, Eliahu Cohen, Avshalom C. Elitzur, Jeff Tollaksen, Yakir Aharonov
Quantum Reality With Negative-Mass Particles, Mordecai Waegell, Eliahu Cohen, Avshalom C. Elitzur, Jeff Tollaksen, Yakir Aharonov
Mathematics, Physics, and Computer Science Faculty Articles and Research
Physical interpretations of the time-symmetric formulation of quantum mechanics, due to Aharonov, Bergmann, and Lebowitz are discussed in terms of weak values. The most direct, yet somewhat naive, interpretation uses the time-symmetric formulation to assign eigenvalues to unmeasured observables of a system, which results in logical paradoxes, and no clear physical picture. A top–down ontological model is introduced that treats the weak values of observables as physically real during the time between pre- and post-selection (PPS), which avoids these paradoxes. The generally delocalized rank-1 projectors of a quantum system describe its fundamental ontological elements, and the highest-rank projectors corresponding to …
Diurnal Variations Of Meteorological Elements To Fluctuation Of Air Quality Parameters, Wandayantolis Wandayantolis, Firda Amalia Maslakah, Sugeng Nugroho
Diurnal Variations Of Meteorological Elements To Fluctuation Of Air Quality Parameters, Wandayantolis Wandayantolis, Firda Amalia Maslakah, Sugeng Nugroho
Journal of Environmental Science and Sustainable Development
Many studies have shown the relationship between meteorological elements and air quality. However, some aspects of the relationship are unknown, particularly in Indonesia, which has a variety of topographical landscapes and climatic conditions. This study seeks to define the relationship between meteorological variables and the diurnal pattern of three pollutants that contributes to the so-called Indeks Standard Pencemar Udara (ISPU), similar to the Air Quality Index (AQI), in a remote area in Bukit Kototabang, West Sumatra, Indonesia. The three parameters, namely Particulate Matter 10 micrometers (PM10), carbon monoxide (CO), and tropospheric ozone (O3), were correlated with diurnal variations …
Empowering 5g Mmwave: Leveraging Kml Placemarks For Enhanced Rf Design And Deployment Efficiency, Gustavo A. Fernandez
Empowering 5g Mmwave: Leveraging Kml Placemarks For Enhanced Rf Design And Deployment Efficiency, Gustavo A. Fernandez
School of Mathematical and Statistical Sciences Faculty Publications and Presentations
This publication explores the significance of Keyhole Markup Language (KML) in telecommunications, particularly in the context of 5G mmWave RF design and planning. With the advent of 5G mmWave technology, the demand for seamless and efficient network deployments has never been greater. The deployment of small cells and repeaters for 5G mmWave necessitates utmost precision in location accuracy and rapid information exchange during site surveys and evaluations. The challenges of mmWave frequencies, including their limited range and susceptibility to attenuation, intensify the complexity and criticality of this process. Network operators must ensure that the chosen location is devoid of obstacles …
Neural Network Learning For Pdes With Oscillatory Solutions And Causal Operators, Lizuo Liu
Neural Network Learning For Pdes With Oscillatory Solutions And Causal Operators, Lizuo Liu
Mathematics Theses and Dissertations
In this thesis, we focus on developing neural networks algorithms for scientific computing. First, we proposed a phase shift deep neural network (PhaseDNN), which provides a uniform wideband convergence in approximating high frequency functions and solutions of wave equations. Several linearized learning schemes have been proposed for neural networks solving nonlinear Navier-Stokes equations. We also proposed a causality deep neural network (Causality-DeepONet) to learn the causal response of a physical system. An extension of the Causality-DeepONet to time-dependent PDE systems is also proposed. The PhaseDNN makes use of the fact that common DNNs often achieve convergence in the low frequency …
The Emergence Of Zerovalent Carbon Compounds From Structural Curiosities To Organocatalysts, Allegra L. Liberman-Martin
The Emergence Of Zerovalent Carbon Compounds From Structural Curiosities To Organocatalysts, Allegra L. Liberman-Martin
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Low-valent main group compounds have reactivity patterns and properties reminiscent of transition metals. While divalent carbon compounds such as carbenes are widely studied ligands and organocatalysts, zerovalent carbon species have received considerably less attention. This perspective highlights the properties and reactivity of zerovalent carbon compounds, focusing on their first applications as organocatalysts for small molecule reduction and polymerization reactions.
The Role Of The Family In Confronting The Excessive Use Of Modern Technology Among Children "Therapeutic Alternatives", Khaled Mikhlif Al-Jenfawi
The Role Of The Family In Confronting The Excessive Use Of Modern Technology Among Children "Therapeutic Alternatives", Khaled Mikhlif Al-Jenfawi
Journal of Police and Legal Sciences
This study aimed to identify the role of the family in confronting the excessive use of technology and social media programs from the view point of social workers and psychologists working for the Juvenile Welfare Department of the Ministry of Social Affairs and Labor in Kuwait, in the light of some variables (sex , and practical experience)
The studywas a descriptive analytical study. It used the social survey method. A questionnaire consisting of (39) items was built and designed, and its validity and reliability were tested. Among the most important results of the study: The level of the family's role …
Characterization And Estimation Of Musculoskeletal Pain Using Machine Learning, Boluwatife Faremi
Characterization And Estimation Of Musculoskeletal Pain Using Machine Learning, Boluwatife Faremi
Master's Theses
Traditional scales utilized for recording pain are known to be highly subjective and biased due to inaccuracies in recollecting actual pain intensities. As a result, machine learning (ML) models that are trained using these scores as ground truth are reported to have low performance for objective pain classification because of the huge disparity between what was felt in moments of pain and the scores recorded afterward.
In the present study, two devices were designed for gathering real-time, continuous in-session subjective pain scores and the recording of the autonomic nervous system (ANS) altered endodermal (EDA) activity. 24 participants were recruited to …