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Articles 40561 - 40590 of 294409

Full-Text Articles in Physical Sciences and Mathematics

Exploring Mental Models For Explainable Artificial Intelligence: Engaging Cross-Disciplinary Teams Using A Design Thinking Approach, Helen Sheridan, Emma Murphy Dr., Dympna O'Sullivan Dr. Jul 2023

Exploring Mental Models For Explainable Artificial Intelligence: Engaging Cross-Disciplinary Teams Using A Design Thinking Approach, Helen Sheridan, Emma Murphy Dr., Dympna O'Sullivan Dr.

Conference papers

Exploring end-users’ understanding of Artificial Intelligence (AI) systems’ behaviours and outputs is crucial in developing accessible Explainable Artificial Intelligence (XAI) solutions. Investigating mental models of AI systems is core in understanding and explaining the often opaque, complex, and unpredictable nature of AI. Researchers engage surveys, interviews, and observations for software systems, yielding useful evaluations. However, an evaluation gulf still exists, primarily around comprehending end-users' understanding of AI systems It has been argued that by exploring theories related to human decision-making examining the fields of psychology, philosophy, and human computer interaction (HCI) in a more people-centric rather than product or technology-centric …


Effect Of Total Population, Population Density And Weighted Population Density On The Spread Of Covid-19 In Malaysia, Hui Shan Wong, Md Zobaer Hasan, Omar Sharif, Azizur Rahman Jul 2023

Effect Of Total Population, Population Density And Weighted Population Density On The Spread Of Covid-19 In Malaysia, Hui Shan Wong, Md Zobaer Hasan, Omar Sharif, Azizur Rahman

School of Mathematical & Statistical Sciences Faculty Publications

Since November 2019, most countries across the globe have suffered from the disastrous consequences of the Covid-19 pandemic which redefined every aspect of human life. Given the inevitable spread and transmission of the virus, it is critical to acknowledge the factors that catalyse transmission of the disease. This research investigates the relation of the external demographic parameters such as total population, population density and weighted population density on the spread of Covid-19 in Malaysia. Pearson correlation and simple linear regression were utilized to identify the relation between the population-related variables and the spread of Covid-19 in Malaysia using data from …


Catalan Numbers As Discrepancies For A Family Of Substitutions On Infinite Alphabets, Dirk Frettlöh, Alexey Garber, Neil Mañibo Jul 2023

Catalan Numbers As Discrepancies For A Family Of Substitutions On Infinite Alphabets, Dirk Frettlöh, Alexey Garber, Neil Mañibo

School of Mathematical & Statistical Sciences Faculty Publications

In this work, we consider a class of substitutions on infinite alphabets and show that they exhibit a growth behaviour which is impossible for substitutions on finite alphabets. While for both settings the leading term of the tile counting function is exponential (and guided by the inflation factor), the behaviour of the second-order term is strikingly different. For the finite setting, it is known that the second term is also exponential or exponential times a polynomial. We exhibit a large family of examples where the second term is at least exponential in n divided by half-integer powers of n, where …


Entanglement In The Hawking Effect: From Astrophysical To Optical Black Holes, Dimitrios Kranas Jul 2023

Entanglement In The Hawking Effect: From Astrophysical To Optical Black Holes, Dimitrios Kranas

LSU Doctoral Dissertations

The Hawking effect is an exciting physical prediction lying at the intersection of the two most successful theories of the past century, namely, Einstein’s theory of relativity and quantum mechanics. In this dissertation, we put special emphasis on the quantum aspects of the Hawking process encoded in the entanglement shared by the emitted fluxes of created quanta. In particular, we employ sharp tools from quantum information theory to quantify the entanglement produced by the Hawking effect throughout the black hole evaporation process. Our framework allows us to extend previous calculations of entanglement to a larger set of cases, for instance, …


Weather In Middle-Earth Or Tolkien: The Weather-Master?, Jonas Mertens Jul 2023

Weather In Middle-Earth Or Tolkien: The Weather-Master?, Jonas Mertens

Journal of Tolkien Research

Abstract

This article attempts to shed light on the use of weather in general and meteorological expressions in The Lord of the Rings, as J. R. R. Tolkien is well known to be a writer for whom the environment and natural world is closely intertwined with his storytelling. Both a manual count and a count which a digital text analysis tool were combined to find the frequency of previously selected weather terms. In total, more than 2,000 references were found in the books, with the words ‘sun’, ‘wind’ and ‘cold’ being the most abundant. Meteorological expressions are frequently encountered in …


Probing Heavy Majorana Neutrinos And The Weinberg Operator Through Vector Boson Fusion Processes In Proton-Proton Collisions At √S = 13 Tev, A. Tumasyan Jul 2023

Probing Heavy Majorana Neutrinos And The Weinberg Operator Through Vector Boson Fusion Processes In Proton-Proton Collisions At √S = 13 Tev, A. Tumasyan

Department of Physics and Astronomy: Faculty Publications

The first search exploiting the vector boson fusion process to probe heavy Majorana neutrinos and the Weinberg operator at the LHC is presented. The search is performed in the same-sign dimuon final state using a proton-proton collision dataset recorded at √s = 13 TeV, collected with the CMS detector and corresponding to a total integrated luminosity of 138 fb−1. The results are found to agree with the predictions of the standard model. For heavy Majorana neutrinos, constraints on the squared mixing element between the muon and the heavy neutrino are derived in the heavy neutrino mass range 50 …


Interactive Effects Of The Partial Pressure Of Co2, Temperature, And Nutrient-Limitation On The Physiology And Growth Of The Coccolithophore E. Huxleyi Grown On A 12:12 L:D Cycle Of Illumination, James Bradley Jul 2023

Interactive Effects Of The Partial Pressure Of Co2, Temperature, And Nutrient-Limitation On The Physiology And Growth Of The Coccolithophore E. Huxleyi Grown On A 12:12 L:D Cycle Of Illumination, James Bradley

LSU Master's Theses

I studied the interactive effects of pCO2, temperature, and nutrient limitation on the growth and physiology of the marine coccolithophore, Emiliania huxleyi. This was done to look at the effect of climate change factors on the widespread and abundant calcifying marine organism as a predictor of what the future has to hold. The strain of E. huxleyi (PnB 272 B10) was grown on a 12:12 L:D cycle of illumination and exposed to either high or low pCO2 under nutrient-replete or nitrate-limited conditions across a temperature range of 10–28C. I examined the direct and interactive effects of temperature, pCO2, and nutrient …


Exploring The Impact Of Eddies On Southern Ocean Biogeochemical Structure Using Bgc-Argo Float Observations, Nicola J. Guisewhite Jul 2023

Exploring The Impact Of Eddies On Southern Ocean Biogeochemical Structure Using Bgc-Argo Float Observations, Nicola J. Guisewhite

USF Tampa Graduate Theses and Dissertations

The Southern Ocean plays a crucial role in global ocean circulation, and global heat and nutrient transport. However, this region is both distant and dangerous and is therefore largely under-sampled and understudied. Methods to fill in biogeochemical data-gaps include using limited in-situ data in models to output biogeochemical property estimates, but a number of recent studies have raised concerns about how most Southern Ocean models do not resolve eddies. Eddies are known to impact biogeochemistry around the globe but little is known about their impact in the Southern Ocean. This study examines temperature, salinity, oxygen, nitrate, and dissolved inorganic carbon …


2023 July 6 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University Jul 2023

2023 July 6 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.


Application Of A Diatomic Molecule Model Potential To A Series Of Homo- And Heterodiatomic Molecules, Dorien E. Carpenter, Javier E. Hasbun Jul 2023

Application Of A Diatomic Molecule Model Potential To A Series Of Homo- And Heterodiatomic Molecules, Dorien E. Carpenter, Javier E. Hasbun

Georgia Journal of Science

We apply a one-dimensional classical model of a diatomic molecule model potential with modifications to H2, HF, LiF, N2, and CO. We obtain the unknown parameters of this model by digitizing plots of the potential curves for the molecules from a published, Hartree-Fock based theoretical electron correlation calculation (Piris 2017). We then apply the method of successive approximations to the model in order to calculate the wavenumber for each molecule in the series. The wavenumber depends on a parameter which in turn depends on the initial conditions. The value of this parameter for each individual molecule …


The Role Of Using Images In Outdoor Advertising Designs To Attract Attention, Sattar Al-Juboori Jul 2023

The Role Of Using Images In Outdoor Advertising Designs To Attract Attention, Sattar Al-Juboori


Outdoor advertising has dominated the visual landscape of cities around the world. Outdoor advertising in city streets and public places are different than the ones located in other places for many reasons. First, it is directed towards particular audience who has no option but to look at it. The research problem lies in the excessive use of images in ways that may have been randomly put without taking into consideration certain factors such as allocation, processing, design construction or some expressive and psychological aspects. Experts have defined some technical problems related to image-choice and the extent of its future impact …


Professional And Ethical Challenges Of Robot Journalism From The Perspective Of Jordanian Journalists, Mazen Al-Fedawi Jul 2023

Professional And Ethical Challenges Of Robot Journalism From The Perspective Of Jordanian Journalists, Mazen Al-Fedawi


This study aimed at identifying the extent of Jordanian journalists ’awareness of the concept of robot journalism and its mechanisms of action, and identifying the most important areas covered by robot journalism, in addition to reviewing the pros and cons of the spread of robot journalism, and the most important professional and ethical challenges associated with robot journalism from the viewpoint of Jordanian journalists. To achieve the objectives of the study, the researcher followed the descriptive and analytical method. The study sample consisted of (350) Jordanian journalists, and the questionnaire was distributed to them in two ways, electronically and manually. …


The Influence Of The Celebrities Of Social Media Platforms On University Students, Hanan Al-Shiekh, Mahmoud Al-Rajabi Jul 2023

The Influence Of The Celebrities Of Social Media Platforms On University Students, Hanan Al-Shiekh, Mahmoud Al-Rajabi


This study aims to identify the impact of famous people on social media platforms on university students. The qualitative methodology and inductive approach were used in the research by conducting in-depth interviews with 21 students from various Jordanian universities, and a focus group of 7 university students was selected, with 12 female influencers and 21 male influencers among them. The study showed that there are seven main reasons that motivate students to pursue and follow-up those influencers, which are: admiration and love, living in another world with different influences, career path, and the release of students’ stress, gaining information that …


The Effect Of The Production Pattern On The Media Content In The Jordanian Tv Channels From The Contact Person Point View (An Analytical Study), Ashraf Al-Manaseer, Shadi Abo-Rashed Jul 2023

The Effect Of The Production Pattern On The Media Content In The Jordanian Tv Channels From The Contact Person Point View (An Analytical Study), Ashraf Al-Manaseer, Shadi Abo-Rashed


The effect of the production pattern on the media content in the Jordanian TV channels from the contact person point view, through analytical study. The study relied on the descriptive approach based on studying the facts about the nature of the phenomenon or a group of individuals, or a group of events or situations related to photographing, analyzing and evaluating the characteristics of the phenomenon to find out the variables that cause the phenomenon to occur, A questionnaire was designed for the study to achieve the desired goals, the study population consisted of 13 private channels in Jordan, and the …


The Degree Of Satisfaction Of Facebook Users About Its Features, Usage Motives And Achieved Gratifications.“An Applied Study On Students Of The Faculty Of Mass Communication At The Middle East University”To Attract Attention, Ahmad Oreqat Jul 2023

The Degree Of Satisfaction Of Facebook Users About Its Features, Usage Motives And Achieved Gratifications.“An Applied Study On Students Of The Faculty Of Mass Communication At The Middle East University”To Attract Attention, Ahmad Oreqat


This study aimed at determining the extent of satisfaction of Facebook users from the students of the Faculty of Media at the Middle East University with regard to its advantages, drivers of use, and the achieved gratifications. The study sample, which was chosen on the available random sample basis, consisted of 106 students enrolled in the second semester in the 2019-2020 academic year which are 308 students. The theoretical framework of the study depended on the theory of uses and gratifications, and the results of the study highlighted that the degree of satisfaction of Facebook users among students about its …


Towards Enabling Haptic Communications Over 6g: Issues And Challenges, Muhammad Awais, Fasih Ullah Khan, Muhammad Zafar, Muhammad Mudassar, Muhammad Zaigham Zaheer, Khalid Mehmood Cheema, Muhammad Kamran, Woo Sung Jung Jul 2023

Towards Enabling Haptic Communications Over 6g: Issues And Challenges, Muhammad Awais, Fasih Ullah Khan, Muhammad Zafar, Muhammad Mudassar, Muhammad Zaigham Zaheer, Khalid Mehmood Cheema, Muhammad Kamran, Woo Sung Jung

Computer Vision Faculty Publications

This research paper provides a comprehensive overview of the challenges and potential solutions related to enabling haptic communication over the Tactile Internet in the context of 6G networks. The increasing demand for multimedia services and device proliferation has resulted in limited radio resources, posing challenges in their efficient allocation for Device-to-Device (D2D)-assisted haptic communications. Achieving ultra-low latency, security, and energy efficiency are crucial requirements for enabling haptic communication over TI. The paper explores various methodologies, technologies, and frameworks that can facilitate haptic communication, including backscatter communications (BsC), non-orthogonal multiple access (NOMA), and software-defined networks. Additionally, it discusses the potential of …


Adsorptive–Photocatalytic Performance For Antibiotic And Personal Care Product Using Cu0.5Mn0.5Fe2O4, Chanat Chokejaroenrat, Chainarong Sakulthaew, Athaphon Angkaew, Apiladda Pattanateeradetch, Wuttinun Raksajit, Kanokwan Teingtham, Piyaporn Phansak, Pawee Klongvessa, Daniel D. Snow, Clifford E. Harris, Steven Comfort Jul 2023

Adsorptive–Photocatalytic Performance For Antibiotic And Personal Care Product Using Cu0.5Mn0.5Fe2O4, Chanat Chokejaroenrat, Chainarong Sakulthaew, Athaphon Angkaew, Apiladda Pattanateeradetch, Wuttinun Raksajit, Kanokwan Teingtham, Piyaporn Phansak, Pawee Klongvessa, Daniel D. Snow, Clifford E. Harris, Steven Comfort

Nebraska Water Center: Faculty Publications

The amount of antibiotics and personal care products entering local sewage systems and ultimately natural waters is increasing and raising concerns about long-term human health effects. We developed an adsorptive photocatalyst, Cu0.5Mn0.5Fe2O4 nanoparticles, utilizing co-precipitation and calcination with melamine, and quantified its efficacy in removing paraben and oxytetracycline (OTC). During melamine calcination, Cu0.5Mn0.5Fe2O4 recrystallized, improving material crystallinity and purity for the adsorptive–photocatalytic reaction. Kinetic experiments showed that all four parabens and OTC were removed within 120 and 45 min. We found that contaminant adsorption and reaction …


Strong Ultrafast Demagnetization Due To The Intraband Transitions, G.P. Zhang Jul 2023

Strong Ultrafast Demagnetization Due To The Intraband Transitions, G.P. Zhang

University Honors Program

No abstract provided.


Estimation Of The Kelvin–Helmholtz Unstable Boundary, Xuanye Ma Jul 2023

Estimation Of The Kelvin–Helmholtz Unstable Boundary, Xuanye Ma

Publications

The Kelvin–Helmholtz (KH) instability is one of the most important mechanisms of the viscous like interaction between the solar wind and the magnetosphere (MSP), which transport the mass, energy, momentum, and magnetic flux. Thus, it is important to examine whether the magnetopause boundary is KH unstable or not. Based on the KH onset conditions, this report proposes to use a matrix to identify the most KH unstable direction based on the in-situ measurements of the density, velocity, and magnetic field in the MSP and magneto sheath. The range of the KH unstable direction can be easily estimated based on the …


When Are The Natural Embeddings Of Classical Invariant Rings Pure?, Melvin Hochster, Jack Jeffries, Vaibhav Pandey, Anurag K. Singh Jul 2023

When Are The Natural Embeddings Of Classical Invariant Rings Pure?, Melvin Hochster, Jack Jeffries, Vaibhav Pandey, Anurag K. Singh

Department of Mathematics: Faculty Publications

Consider a reductive linear algebraic group G acting linearly on a polynomial ring S over an infinite field; key examples are the general linear group, the symplectic group, the orthogonal group, and the special linear group, with the classical representations as inWeyl’s book: For the general linear group, consider a direct sum of copies of the standard representation and copies of the dual; in the other cases, take copies of the standard representation. The invariant rings in the respective cases are determinantal rings, rings defined by Pfaffians of alternating matrices, symmetric determinantal rings and the Plücker coordinate rings of Grassmannians; …


Optimizing The Membrane-Assisted Recovery Of Solids (Mars) Technology For Nutrient Removal And Recovery From Concentrated Waste Streams, Ben Yamin Hoque Jul 2023

Optimizing The Membrane-Assisted Recovery Of Solids (Mars) Technology For Nutrient Removal And Recovery From Concentrated Waste Streams, Ben Yamin Hoque

USF Tampa Graduate Theses and Dissertations

The effective management of nutrients, such as nitrogen and phosphorus, in decentralizedwastewater treatment environments is a pressing challenge. These nutrients pose significant risks to the environment and public health when discharged into water bodies, while their recovery and reuse can help alleviate nutrient shortages in various industries, including agriculture. Conventional biological treatment methods used in centralized facilities are not suitable for decentralized systems due to operational complexities and space limitations. Chemical treatment mechanisms, such as adsorption, ion exchange, precipitation, and air-stripping, offer potential solutions but are accompanied by challenges like high costs and logistical issues. Therefore, finding a sustainable and …


Butte Priority Soils Operable Unit (Bpsou) Field Xrf To Laboratory Correlation And Regression Analysis Procedure For Unreclaimed (Ur) And Insufficiently Reclaimed (Ir) Sites, Mike Mcanulty, Pioneer Technical Services, Inc. Jul 2023

Butte Priority Soils Operable Unit (Bpsou) Field Xrf To Laboratory Correlation And Regression Analysis Procedure For Unreclaimed (Ur) And Insufficiently Reclaimed (Ir) Sites, Mike Mcanulty, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.


Investigating The Effects Of The Sugar Alcohol Osmolytes Glycerol And Erythritol In Aot Reverse Micelles, Animesh Dali '24, Bridget Gourley Jul 2023

Investigating The Effects Of The Sugar Alcohol Osmolytes Glycerol And Erythritol In Aot Reverse Micelles, Animesh Dali '24, Bridget Gourley

Student Research

Water is a polar molecule that participates in hydrogen bonding and proton transfer. Geometric confinement and water’s interactions with osmolytes (small water soluble compounds) affect the ability of water molecules to hydrogen bond and transfer charges. Study of this behaviour of water with different osmolytes in controlled environments will help us develop predictive models. In our study, we have prepared Sodium bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelles (RM) in 2,2,4-Trimethylpentane (Isooctane). Our principle osmolytes were the straight chain sugar alcohols glycerol and erythritol. Study of water-osmolyte behaviour in the small and confined pool of a reverse micelle allows us examine the difference …


Urban Memory Becomes An Idea In The Concept Of Spatial Planning (Study Case: Restoration Area Of Tambora District, West Jakarta), Riska Phillia, Antony Sihombing Jul 2023

Urban Memory Becomes An Idea In The Concept Of Spatial Planning (Study Case: Restoration Area Of Tambora District, West Jakarta), Riska Phillia, Antony Sihombing

Smart City

Urban heritage is a small part of the past of the city that holds the roots of the city's identity and culture, which are the city's identity. The strong identity of the historic area must be maintained, but this has a dilemma because of the need for change today. Therefore efforts are needed to create adaptive urban heritage areas. City spaces have a deep relationship with the people who inhabit them, with the most memorable or most memorable experiences and memories for them. This research contributes to exploring urban memory to develop conceptual spatial plans in restoration areas, using qualitative …


Major Paths Changes In 2013-2022 To Walkability (Case Study: Dukuh Atas Tod), Daniel Harvey Tulis, Antony Sihombing Jul 2023

Major Paths Changes In 2013-2022 To Walkability (Case Study: Dukuh Atas Tod), Daniel Harvey Tulis, Antony Sihombing

Smart City

Development area with the concept of Transit Oriented Development (TOD) occurs so rapidly in big cities, which aims to create an integrated transportation system and is supported by the surrounding area. TOD area must have good road access for vehicles and space for pedestrians. Dukuh Atas TOD is one of the transit-oriented areas planned to be the largest TOD area in Jakarta so that developments are felt every year, including visuals and the road traffic system and pedestrian space. This research is using qualitative method by answering specific and actual variables. Time series analysis to see changes every year combined …


A Multivariate Investigation Of The Motivational, Academic, And Well-Being Characteristics Of First-Generation And Continuing-Generation College Students, Christopher L. Thomas, Staci Zolkoski Jul 2023

A Multivariate Investigation Of The Motivational, Academic, And Well-Being Characteristics Of First-Generation And Continuing-Generation College Students, Christopher L. Thomas, Staci Zolkoski

Journal of Research Initiatives

Prior research has noted differences in motivational, academic, and well-being factors between first-generation and continuing-education students. However, past investigations have primarily overlooked the interactive influence of protective and risk factors when comparing the characteristics of first-generation and continuing-education students. Thus, the current study adopted a multivariate approach to gain a more nuanced understanding of the influence of generational status on students' self-regulated learning capabilities, academic anxiety, sense of belonging, academic barriers, mental health concerns, and satisfaction with life. University students (N = 432, 67.46% Caucasian, 87.55% female, Age = 28.10 ± 9.46) completed the Cognitive Test Anxiety Scale-2nd …


Future Trends And Directions For Secure Infrastructure Architecture In The Education Sector: A Systematic Review Of Recent Evidence, Isaac Atta Senior Ampofo, Isaac Atta Junior Ampofo Jul 2023

Future Trends And Directions For Secure Infrastructure Architecture In The Education Sector: A Systematic Review Of Recent Evidence, Isaac Atta Senior Ampofo, Isaac Atta Junior Ampofo

Journal of Research Initiatives

The most efficient approach to giving large numbers of students’ access to computational resources is through a data center. A contemporary method for building the data center's computer infrastructure is the software-defined model, which enables user tasks to be processed in a reasonable amount of time and at a reasonable cost. The researcher examines potential directions and trends for a secured infrastructure design in this article. Additionally, interoperable, highly reusable modules that can include the newest trends in the education industry are made possible by cloud-based educational software. The Reference Architecture for University Education System Using AWS Services is presented …


The Next Generation Virgo Cluster Survey (Ngvs). Xxxv. First Kinematical Clues Of Overly Massive Dark Matter Halos In Several Ultradiffuse Galaxies In The Virgo Cluster, Elisa Toloba, Laura V. Sales, Sungsoon Lim, Eric W. Peng, Puragra Guhathakurta, Joel Roediger, Kaixiang Wang, J. Christopher Mihos, Patrick Côté, Patrick R. Durrell, Laura Ferrarese Jul 2023

The Next Generation Virgo Cluster Survey (Ngvs). Xxxv. First Kinematical Clues Of Overly Massive Dark Matter Halos In Several Ultradiffuse Galaxies In The Virgo Cluster, Elisa Toloba, Laura V. Sales, Sungsoon Lim, Eric W. Peng, Puragra Guhathakurta, Joel Roediger, Kaixiang Wang, J. Christopher Mihos, Patrick Côté, Patrick R. Durrell, Laura Ferrarese

Pacific Faculty Work

We present Keck/DEIMOS spectroscopy of the first complete sample of ultradiffuse galaxies (UDGs) in the Virgo cluster. We select all UDGs in Virgo that contain at least 10 globular cluster (GC) candidates and are more than 2.5σ outliers in scaling relations of size, surface brightness, and luminosity (a total of 10 UDGs). We use the radial velocity of their GC satellites to measure the velocity dispersion of each UDG. We find a mixed bag of galaxies, from one UDG that shows no signs of dark matter, to UDGs that follow the luminosity-dispersion relation of early-type galaxies, to the most extreme …


Gama/Devils: Cosmic Star Formation And Agn Activity Over 12.5 Billion Years, Jordan C J D’Silva, Simon P. Driver, Claudia D P Lagos, Aaron S G Robotham, Sabine Bellstedt, Luke J M Davies, Jessica E. Thorne, Joss Bland-Hawthorn, Matias Bravo, Benne Holwerda, Steven Phillipps, Nick Seymour, Malgorzata Siudek, Rogier A. Windhorst Jul 2023

Gama/Devils: Cosmic Star Formation And Agn Activity Over 12.5 Billion Years, Jordan C J D’Silva, Simon P. Driver, Claudia D P Lagos, Aaron S G Robotham, Sabine Bellstedt, Luke J M Davies, Jessica E. Thorne, Joss Bland-Hawthorn, Matias Bravo, Benne Holwerda, Steven Phillipps, Nick Seymour, Malgorzata Siudek, Rogier A. Windhorst

Faculty and Staff Scholarship

We use the Galaxy and Mass Assembly (GAMA) and the Deep Extragalactic Visible Legacy Survey (DEVILS) observational data sets to calculate the cosmic star formation rate (SFR) and active galactic nuclei (AGN) bolometric luminosity history (CSFH/CAGNH) over the last 12.5 billion years. SFRs and AGN bolometric luminosities were derived using the spectral energy distribution fitting code ProSpect, which includes an AGN prescription to self consistently model the contribution from both AGN and stellar emission to the observed rest-frame ultra-violet to far-infrared photometry. We find that both the CSFH and CAGNH evolve similarly, rising in the early Universe up to a …


Short-Term Responses Of Soil Carbon, Nitrogen, And Microbial Biomass To Cover Crop Mixtures And Monocultures, Igor Alexandre De Souza, Amanda B. Daly, Jorg Schnecker, Nicholas D. Warren, Adalfredo Rocha Lobo Jr., Richard G. Smith, Andre Fonseca Brito, A. Stuart Grandy Jul 2023

Short-Term Responses Of Soil Carbon, Nitrogen, And Microbial Biomass To Cover Crop Mixtures And Monocultures, Igor Alexandre De Souza, Amanda B. Daly, Jorg Schnecker, Nicholas D. Warren, Adalfredo Rocha Lobo Jr., Richard G. Smith, Andre Fonseca Brito, A. Stuart Grandy

Faculty Publications

Increasingly, cover crops are being adopted for the purpose of improving soil health, yet the timescale and magnitude by which living annual cover crops might modify soil chemical and biological aspects of soil health is not well understood. At the same time, there is growing interest among farmers in cover crop mixtures due to perceptions that species-rich cover crop communities will enhance soil health relative to monocultures. In a field experiment in southeast New Hampshire, we investigated how groups of cover crops grown as monocultures and mixtures for specific seasonal niches (winter/spring, summer, and fall) influenced levels of soil nitrogen …