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Participatory Evaluation Of Urochloa (Brachiaria) Grasses In The Cool Highlands Of Central Kenya, Elkana Nyambati, W. Ayako, S. K. Mailu Feb 2024

Participatory Evaluation Of Urochloa (Brachiaria) Grasses In The Cool Highlands Of Central Kenya, Elkana Nyambati, W. Ayako, S. K. Mailu

IGC Proceedings (1977-2023)

Grasslands are increasingly threatened by over exploitation, degradation and climate change that has undermined their productive capacity, leading led to inadequate quantity and quality feed. Urochloa grass, a native of eastern Africa has been widely improved and adapted as livestock forage. A farmer participatory study was conducted to evaluate productivity of eight Urochloa grasses (Urochloa brizantha cv. Marandu, U. brizantha cv. Xareas, U. brizantha cv. Piata, U. brizantha cv. MG4, U. decumbens cv. Basilisk, U. humidicola cv. Humidicola, U. humidicola cv. Llanero and Urochloa hybrid Mulato II) compared to controls of Pennisetum purpureum (Napier grass cv. Kakamega 1 …

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Is There A Need For Tailored Graduate Programs For International Students?, K. T. Oduor, Lynn E. Sollenberger, J. Dubeux, L. M. D. Queiroz Feb 2024

Is There A Need For Tailored Graduate Programs For International Students?, K. T. Oduor, Lynn E. Sollenberger, J. Dubeux, L. M. D. Queiroz

IGC Proceedings (1977-2023)

International studies often present opportunities for capacity development and mentorship for students to equip them with the knowledge and skills to address the challenges in their home countries. Typically, international graduate students are drawn from diverse educational and cultural backgrounds different from those in their host countries. Adjusting to these changes might be challenging and time-consuming, thus influencing their academic journey. Understanding these challenges might provide international students the opportunity to address them in time and, where possible, seek help. In this paper, we discuss some graduate program-related challenges international students face and provide potential recommendations that might result in …

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Sunn Hemp As An Alternative Forage In The Texas High Plains Region, S. A. O’Shaughnessy, H. M. Mosqueda, D. K. Brauer Feb 2024

Sunn Hemp As An Alternative Forage In The Texas High Plains Region, S. A. O’Shaughnessy, H. M. Mosqueda, D. K. Brauer

IGC Proceedings (1977-2023)

Forage production in the Texas High Plains, a semi-arid region, is critical to sustain the local cattle industry. However, the main source of water for irrigation is the highly depleted Ogallala Aquifer, making forage crop water productivity (CWP) of high importance. In this one-year study, three types of forages were cultivated under deficit irrigation treatments of 80% and 50% of full crop water use. The forages were: a non-brown midrib forage sorghum; a legume, sunn hemp; and a sorghum/sunn hemp mix. The experiment was conducted in Bushland, Texas in 2019. Treatment plots were arranged in a split plot design with …

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Differences In Carbon Sequestration And Water Use Between A Semi-Arid Native Grassland And Encroaching Vachellia Karroo Woodland, C. Weideman, A. R. Palmer, G. Carolyn, Kathleen Smart Feb 2024

Differences In Carbon Sequestration And Water Use Between A Semi-Arid Native Grassland And Encroaching Vachellia Karroo Woodland, C. Weideman, A. R. Palmer, G. Carolyn, Kathleen Smart

IGC Proceedings (1977-2023)

Tree and shrub encroachment and proliferation in global grasslands and savannas is widely considered to imply a trade-off between ecosystem C and H2O regulating functions, based on the premise that increased C sequestration associated with higher woody biomass ostensibly drive declines in water production through concomitant increases in evapotranspiration (ET), but evidence for this across climatic and environmental gradients is equivocal. To evaluate these claims, we ran a paired eddy covariance experiment in a native semi-arid C4 grassland and adjacent encroaching Vachellia karroo woodland on the eastern seaboard of South Africa and compared ecosystem C and H2O budgets over nearly …

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Contribute To A Definition Of Extensive Grazing (Mediterranean), J. Potes, J. P. F. Almeida, C. Matos, A. Teixeira Feb 2024

Contribute To A Definition Of Extensive Grazing (Mediterranean), J. Potes, J. P. F. Almeida, C. Matos, A. Teixeira

IGC Proceedings (1977-2023)

The subject of this paper is a definition of Extensive Grazing from Extensive Systems of Animal Production in Mediterranean environments. The edaphoclimatic characterization is essential to understand the low level of primary productivity as a consequence of irregular precipitation over the year and its absence during the long, dry and hot summer. The powerless of soils justify the limited contribution of plants and make clear the necessary recovery of the soil and storage of water naturally (soil) or artificially (irrigation). Considering the IPBES (Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services) definition of extensive grazing it has been used the …

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Soil Carbon Monitoring Program For Ranches In Dryland Ecosystems, David E. Prado-Tarango, S. Ates, J. Talbot Feb 2024

Soil Carbon Monitoring Program For Ranches In Dryland Ecosystems, David E. Prado-Tarango, S. Ates, J. Talbot

IGC Proceedings (1977-2023)

Implementation of ranching practices that lead to greater soil carbon sequestration has become increasingly important due to rising atmospheric CO2 levels. Sustainable ranching practices are suggested to improve soil health and sequester more carbon in the soil. However, there is a paucity of measured data from replicated on-farm studies to support this premise. Thus, we developed a soil carbon monitoring program for a ranch located in the state of Oregon. Our monitoring program is focused on measuring the net carbon budget and the soil carbon sequestration totals. To achieve this goal, we combined field-sampling data with the COMET-Farm model. A …

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Answering Complex Questions As We Make Headway On Annual Grasses And Fire, T. Prather, L. Jones, E. Strand, G. Harrison, K. Johnston Feb 2024

Answering Complex Questions As We Make Headway On Annual Grasses And Fire, T. Prather, L. Jones, E. Strand, G. Harrison, K. Johnston

IGC Proceedings (1977-2023)

Annual grasses challenge our ability to meet forage production and plant community conservation objectives. Direct competition, potential mutualism, and shortened fire return interval interplay resulting in complexity of how to meet challenges we face. Bromus tectorum presents challenges to sagebrush dominated plant communities with shortened fire return intervals and the advancing invasion of Ventenata dubia poses threats to forage production through competitive interactions that may involve mutualism to enhance V. dubia’s invasion of annual and perennial grass dominated plant communities. Use of fuel breaks can reduce the extent of fires and their proper function hinges on their reduced plant biomass …

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Rangeland Devastated By Invasive Annual Grass, H. E. Quicke Feb 2024

Rangeland Devastated By Invasive Annual Grass, H. E. Quicke

IGC Proceedings (1977-2023)

This paper serves as an introduction to the thematic session on protection and restoration of western US rangelands. Exotic annual grass species have steadily invaded western US rangeland for decades. More recently, the problem of invasive annual grasses received national attention with multiple stakeholders working together under the auspices of Western Governors’ Association to develop a common strategy to fight back.

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Preventing Conversion To A Highly Degraded Invasive Dominated System, C. V. Ransom Feb 2024

Preventing Conversion To A Highly Degraded Invasive Dominated System, C. V. Ransom

IGC Proceedings (1977-2023)

Invasive annual grasses (IAG) negatively impact rangeland across the Western US. Within the Intermountain Region, downy brome, Japanese brome, medusahead, and ventenata are among the most prevalent invasive annual grass species. Research conducted at Utah State University has addressed numerous approaches to IAG management as well investigating restoration strategies of highly degraded sites. Under harsh climates common to the Western US, restoration has been extremely challenging, causing focus to shift towards prioritizing the protection of existing desirable plant communities. In either restoration or plant community protection approaches, annual rainfall is the largest driver of success. Changes or shifts in plant …

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Red Deer Browsing Decelerates Shrub Regrowth Despite Increasing Wolf Presence, F. Riesch, C. Raab, Bettina Tonn, N. Gerber, M. Zetsche, J. Signer, Marcus Meißner, Sven Herzog, Niko Balkenhol, Johannes Isselstein Feb 2024

Red Deer Browsing Decelerates Shrub Regrowth Despite Increasing Wolf Presence, F. Riesch, C. Raab, Bettina Tonn, N. Gerber, M. Zetsche, J. Signer, Marcus Meißner, Sven Herzog, Niko Balkenhol, Johannes Isselstein

IGC Proceedings (1977-2023)

Semi-natural open habitats in Europe have been shaped by traditional land use practices, such as extensive mowing or livestock grazing. However, socio-economic transformations have led to the abandonment of many grassland and heathland areas and conservation management is now required to maintain these biodiverse habitats. Grazing by wild red deer (Cervus elaphus) can be a convenient alternative to laborious mechanical management or livestock grazing. Yet it remains unclear if free-ranging ungulates can counteract shrub growth sufficiently to maintain open habitats—especially with natural predators, i.e. wolves (Canis lupus), recolonizing Europe. To assess red deer effects on shrub …

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Using Recurrent Phenotypical Selection To Improve Drought Tolerance Of Red Clover, M. Sahin, S. Reid, E. Sahin, S. Ates, S. Elias, David B. Hannaway Feb 2024

Using Recurrent Phenotypical Selection To Improve Drought Tolerance Of Red Clover, M. Sahin, S. Reid, E. Sahin, S. Ates, S. Elias, David B. Hannaway

IGC Proceedings (1977-2023)

Red clover is one of the most important forage legumes in the world. It is utilized extensively in European and North American farming systems. Approximately, 4 million hectares of red clover are grown globally each year for forage production, soil improvement, and as a pollen and nectar source for pollinators (Riday, 2010). In North America, red clover is widely used in temperate regions for pasture, hay, and silage in combination with grasses for soil improvement and as a pollen and nectar source for bumblebees (Bombus). In the northwest, it is also grown for seed production (Anderson et al., 2016) with …

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Legumes As A Biological Tool To Address The Sustainability Of Ruminant Production Systems, H. Sheridan, M. B. Lynch Feb 2024

Legumes As A Biological Tool To Address The Sustainability Of Ruminant Production Systems, H. Sheridan, M. B. Lynch

IGC Proceedings (1977-2023)

Growing public concern regarding accelerated rates of climate change, the depletion and degradation of natural resources such as biodiversity water and soils, coupled with policy commitments to address these challenges, are placing increasing pressures to enhance sustainability metrics associated with agriculture in general, and ruminant production systems in particular. At EU and indeed global scale, there has probably never before been so many potentially conflicting challenges for agriculture. On one hand, agricultural systems need to produce more, to feed the increasing global human population, while at the same time being much less reliant on economically and environmentally costly chemical inputs …

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How Do Artemisia Capillaris Population Respond To Grazing Management And Rain Reduction?, Li-Yuan Shi, Fu-Jiang Hou, Zhen Wang Feb 2024

How Do Artemisia Capillaris Population Respond To Grazing Management And Rain Reduction?, Li-Yuan Shi, Fu-Jiang Hou, Zhen Wang

IGC Proceedings (1977-2023)

Climate and human activities, such as drought event and livestock grazing, generally coupled to influence the structure and function of grassland ecosystems. However, most of previous studies focused on the isolated effects of grazing or drought on grassland ecosystems, with little attention paid to the combined effects of them. Further, we know little about how plants respond to grazing and drought at the population level. We conducted a grazing regime (enclosure, stop grazing, and heavy grazing) and drought manipulation experiment in a typical steppe to explore how grassland plants response to ongoing drought and grazing regimes at the population level. …

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Development Of Forage Curriculum For Extension Educators In The Southeast Usa, L. S. Silva, L. Dillard, K. Mullenix, M. Wallau, J. J. Tucker, C. Vasco Feb 2024

Development Of Forage Curriculum For Extension Educators In The Southeast Usa, L. S. Silva, L. Dillard, K. Mullenix, M. Wallau, J. J. Tucker, C. Vasco

IGC Proceedings (1977-2023)

In the Southeast USA, livestock production is one of the largest agricultural activities, and forages are the primary feed source. Most livestock systems are highly dependent on off-farm inputs to support forage production and animal performance, which elevates production costs and the activity's carbon footprint. There is a strong need to develop forage educational resources to enhance productivity, environmental sustainability, resilience, and profitability of agricultural systems in the region. This multi-disciplinary initiative was a collaboration among several land-grant Universities across the region. The objective was to develop decision tools and provide in-classroom training associated with hands-on demonstrations to Extension agents …

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Univariate Optimization Of Dispersive Liquid-Liquid Microextraction For Preconcentration Of Lead From Environmental Matrices, Samawah Region Prior To Quantification Using Flame Atomic Absorption Spectroscopy, Zaman Sahb Mehdi, Saher A. Ali Alshamkhawy Feb 2024

Univariate Optimization Of Dispersive Liquid-Liquid Microextraction For Preconcentration Of Lead From Environmental Matrices, Samawah Region Prior To Quantification Using Flame Atomic Absorption Spectroscopy, Zaman Sahb Mehdi, Saher A. Ali Alshamkhawy

Al-Bahir

In this work, a procedure based on dispersive liquid₋liquid microextraction for lead (Pb) preconcentration and quantification in an environmental matrix by flame atomic absorption spectroscopy (FAAS) was applied. A case-study approach was chosen to obtain further in-depth information on the Pb levels. The green chemistry principles have been applied for the pretreatment and preparation of real samples by focusing on some features such as the volume of reagents/sample, employ of energy efficient equipment, and production of waste. A univariate strategy was utilized to achieve the optimum extraction conditions. 1750 µL of acetonitrile containing 100 µL of carbon tetrachloride, were rapid …

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Contribution Of Mine Water And Uranium Ore Rocks To The 222rn-Induced Radiation Dose Received By The Mine Workers In A Low-Ore Grade Underground Uranium Mine, India, Imran Athar Beg, Patitapaban Sahu Feb 2024

Contribution Of Mine Water And Uranium Ore Rocks To The 222rn-Induced Radiation Dose Received By The Mine Workers In A Low-Ore Grade Underground Uranium Mine, India, Imran Athar Beg, Patitapaban Sahu

Journal of Sustainable Mining

More than 50% of the radiation dose received by underground mine workers is mainly due to the inhalation of radon (222Rn) gas and its decay products in an underground mine working space. Monitoring and controlling of 222Rn exhalation in the underground mine working plays a vital role in minimizing the radiation risk hazards to the mine-workers. This study discusses the contribution of mine water and uranium ore to 222Rn activity concentration in mine air and its health risk assessment. The annual effective radiation dose (ERn) due to inhalation of 222Rn for mine workers is estimated 0.10 mSv/y. Furthermore, the estimated …

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Steminism: Analyzing Factors That Improve Retention Of Women In Stem, Kira Carter, Jane Kelley, Jason Vasser-Elong, Rc Patterson Feb 2024

Steminism: Analyzing Factors That Improve Retention Of Women In Stem, Kira Carter, Jane Kelley, Jason Vasser-Elong, Rc Patterson

Dissertations

Our co-authored research ‘Steminism: Analyzing Factors That Improve Retention for Women as STEM Majors’ analyzed factors that contributed to the retention of women in science, technology, engineering, and mathematics (STEM) programs at Missouri University of Science & Technology (Missouri S&T). Women make up half of the US population, and while careers in (STEM) are an integral part of the US economy, women are underrepresented in these career fields. The purpose of our dissertation is to address the underrepresentation of women in STEM majors. Our methodology included homogeneous sampling to collect qualitative data. More specifically, we consulted with academic advisors and …

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The Current - Volume 34 Issue 9, Nova Southeastern University Feb 2024

The Current - Volume 34 Issue 9, Nova Southeastern University

Student Newspapers

No abstract provided.

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Heavy-Element Production In A Compact Object Merger Observed By Jwst, Andrew J. Levan, Benjamin P. Gompertz, Om Sharan Salafia, Mattia Bulla, Eric Burns, Kenta Hotokezaka, Luca Izzo, Gavin P. Lamb, Daniele B. Malesani, Samantha R. Oates, Maria Edvige Ravasio, Alicia Rouco Escorial, Benjamin Schneider, Nikhil Sarin, Steve Schulze, Nial R. Tanvir, Kendall Ackley, Gemma Anderson, Gabriel B. Brammer, Lise Christensen, Vikram S. Dhillon, Phil A. Evans, Michael Fausnaugh, Wen Fai Fong, Andrew S. Fruchter, Chris Fryer, Johan P.U. Fynbo, Nicola Gaspari, Kasper E. Heintz, Jens Hjorth, Jamie A. Kennea, Mark R. Kennedy, Tanmoy Laskar Feb 2024

Heavy-Element Production In A Compact Object Merger Observed By Jwst, Andrew J. Levan, Benjamin P. Gompertz, Om Sharan Salafia, Mattia Bulla, Eric Burns, Kenta Hotokezaka, Luca Izzo, Gavin P. Lamb, Daniele B. Malesani, Samantha R. Oates, Maria Edvige Ravasio, Alicia Rouco Escorial, Benjamin Schneider, Nikhil Sarin, Steve Schulze, Nial R. Tanvir, Kendall Ackley, Gemma Anderson, Gabriel B. Brammer, Lise Christensen, Vikram S. Dhillon, Phil A. Evans, Michael Fausnaugh, Wen Fai Fong, Andrew S. Fruchter, Chris Fryer, Johan P.U. Fynbo, Nicola Gaspari, Kasper E. Heintz, Jens Hjorth, Jamie A. Kennea, Mark R. Kennedy, Tanmoy Laskar

Faculty Publications

The mergers of binary compact objects such as neutron stars and black holes are of central interest to several areas of astrophysics, including as the progenitors of gamma-ray bursts (GRBs)1, sources of high-frequency gravitational waves (GWs)2 and likely production sites for heavy-element nucleosynthesis by means of rapid neutron capture (the r-process)3. Here we present observations of the exceptionally bright GRB 230307A. We show that GRB 230307A belongs to the class of long-duration GRBs associated with compact object mergers4–6 and contains a kilonova similar to AT2017gfo, associated with the GW merger GW170817 (refs. 7–12). …

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Design Challenges For A Future Liquid Xenon Observatory, Abigail Kopec Feb 2024

Design Challenges For A Future Liquid Xenon Observatory, Abigail Kopec

Faculty Journal Articles

An ultimate liquid xenon experiment would be limited in its dark matter science reach by irreducible neutrino backgrounds, which are an exciting signal in their own right. To achieve such sensitivity, other backgrounds that currently plague these detectors must be better mitigated, and extreme care must be taken in the design and construction phases. A 100-tonne xenon target is compelling to search for weakly interacting massive particle dark matter, and has capabilities to study coherent elastic neutrino-nucleus scattering and search for neutrinoless double-beta decay signatures. Historically, liquid xenon time projection chambers have scaled to larger target masses with great success. …

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Evaluating Future Water Availability In Texas Through The Lens Of A Data-Driven Approach Leveraged With Cmip6 General Circulation Models, Wenzhao Li, Dongfeng Li, Hesham El-Askary, Joshua B. Fisher, Zheng N. Fang Feb 2024

Evaluating Future Water Availability In Texas Through The Lens Of A Data-Driven Approach Leveraged With Cmip6 General Circulation Models, Wenzhao Li, Dongfeng Li, Hesham El-Askary, Joshua B. Fisher, Zheng N. Fang

Mathematics, Physics, and Computer Science Faculty Articles and Research

Climate change is escalating the frequency and intensity of extreme precipitation events, significantly influencing the spatial and temporal distributions of water resources. This is particularly evident in Texas, a rapidly growing state with a pronounced west-east gradient in water supply. This study utilizes Coupled Model Intercomparison Project Phase 6 (CMIP6) data and data-driven methodology to improve projections of Texas's future water resources, focusing on actual evapotranspiration (AET) and water availability through enhanced Multi-Model Ensembles. The results reveal that the data-driven model significantly outperforms the CMIP5 and CMIP6 models across all skill metrics, underscoring the potential of data-driven methodologies in advancing …

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Using Trees To See A Forest: Leveraging Machine Learning To Classify Student Thinking, Darryl Chamberlain, Patrick Mcguinness, Emily Faulconer, Beverly Wood Feb 2024

Using Trees To See A Forest: Leveraging Machine Learning To Classify Student Thinking, Darryl Chamberlain, Patrick Mcguinness, Emily Faulconer, Beverly Wood

Publications

ChatGPT has caught the world’s attention and has researchers considering the ways artificial intelligence can be integrated into human endeavors (Kasneci et al., 2023). This methodological poster will present a systematic method to apply a particular machine learning classification model, Decision Tree (Song & Lu, 2015), to perform and extend the scale of qualitative analysis in mathematics education research.

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Ai-Based Investigation And Mitigation Of Rain Effect On Channel Performance With Aid Of A Novel 3d Slot Array Antenna Design For High Throughput Satellite System, Ali M. Al-Saegh, Fatma Taher, Taha A. Elwi, Mohammad Alibakhshikenari, Bal S. Virdee, Osama Abdullah, Salahuddin Khan, Patrizia Livreri, Abdulmajeed Al-Jumaily, Mohamed Fathy Abo Sree, Arkan Mousa Majeed, Lida Kouhalvandi, Zaid A. Abdul Hassain, Giovanni Pau Feb 2024

Ai-Based Investigation And Mitigation Of Rain Effect On Channel Performance With Aid Of A Novel 3d Slot Array Antenna Design For High Throughput Satellite System, Ali M. Al-Saegh, Fatma Taher, Taha A. Elwi, Mohammad Alibakhshikenari, Bal S. Virdee, Osama Abdullah, Salahuddin Khan, Patrizia Livreri, Abdulmajeed Al-Jumaily, Mohamed Fathy Abo Sree, Arkan Mousa Majeed, Lida Kouhalvandi, Zaid A. Abdul Hassain, Giovanni Pau

All Works

Rain attenuation poses a significant challenge for high-throughput communication systems. In response, this paper introduces an artificial intelligence (AI) model designed for predicting and mitigating rain-induced impairments in high-throughput satellite (HTS) to land channels. The model is based on three AI algorithms developed using 3D antenna design to characterize, analyze, and mitigate rain-induced attenuation, optimizing channel quality specifically in the United Arab Emirates (UAE). The study evaluates various parameters, including rain-specific attenuation, effective slant path through rain, rain-induced attenuation, signal carrier-to-noise ratio, and symbol error rate, for five conventional modulation schemes: Quadrature Phase-Shift Keying (QPSK), 8-Phase Shift Keying (8-PSK), 16-Quadrature …

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Perovskite Materials In X-Ray Detection And Imaging: Recent Progress, Challenges, And Future Prospects, Md Helal Miah, Mayeen U. Khandaker, Mohammad A. Islam, Mohammad Nur-E-Alam, Hamid Osman, Md Habib Ullah Feb 2024

Perovskite Materials In X-Ray Detection And Imaging: Recent Progress, Challenges, And Future Prospects, Md Helal Miah, Mayeen U. Khandaker, Mohammad A. Islam, Mohammad Nur-E-Alam, Hamid Osman, Md Habib Ullah

Research outputs 2022 to 2026

Perovskite materials have attracted significant attention as innovative and efficient X-ray detectors owing to their unique properties compared to traditional X-ray detectors. Herein, chronologically, we present an in-depth analysis of X-ray detection technologies employing organic-inorganic hybrids (OIHs), all-inorganic and lead-free perovskite material-based single crystals (SCs), thin/thick films and wafers. Particularly, this review systematically scrutinizes the advancement of the diverse synthesis methods, structural modifications, and device architectures exploited to enhance the radiation sensing performance. In addition, a critical analysis of the crucial factors affecting the performance of the devices is also provided. Our findings revealed that the improvement from single crystallization …

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What Diameter? What Height? Influence Of Measures Of Average Tree Size On Area-Based Allometric Volume Relationships, Yilin Wang, John A. Kershaw, Mark J. Ducey, Yuan Sun, James B. Mccarter Feb 2024

What Diameter? What Height? Influence Of Measures Of Average Tree Size On Area-Based Allometric Volume Relationships, Yilin Wang, John A. Kershaw, Mark J. Ducey, Yuan Sun, James B. Mccarter

Faculty Publications

Volume is an important attribute used in many forest management decisions. Data from 83 fixed-area plots located in central New Brunswick, Canada, are used to examine how different measures of stand-level diameter and height influence volume prediction using a stand-level variant of Honer's (1967) volume equation. When density was included in the models (Volume=f(Diameter,Height,Density)) choice of diameter measure was more important than choice of height measure. When density was not included (Volume=f(Diameter,Height)), the opposite was true. For models with density included, moment-based estimators of stand diameter and height performed better than all other measures. For models without density, largest tree …

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What Diameter? What Height? Influence Of Measures Of Average Tree Size On Area-Based Allometric Volume Relationships, Yilin Wang, John A. Kershaw, Mark J. Ducey, Yuan Sun, James B. Mccarter Feb 2024

What Diameter? What Height? Influence Of Measures Of Average Tree Size On Area-Based Allometric Volume Relationships, Yilin Wang, John A. Kershaw, Mark J. Ducey, Yuan Sun, James B. Mccarter

Faculty Publications

Volume is an important attribute used in many forest management decisions. Data from 83 fixed-area plots located in central New Brunswick, Canada, are used to examine how different measures of stand-level diameter and height influence volume prediction using a stand-level variant of Honer's (1967) volume equation. When density was included in the models (Volume=f(Diameter,Height,Density)) choice of diameter measure was more important than choice of height measure. When density was not included (Volume=f(Diameter,Height)), the opposite was true. For models with density included, moment-based estimators of stand diameter and height performed better than all other measures. For models without density, largest tree …

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Pattern Recognition In Experienced Pediatric Nurses, Kathleen Wilson Neal Feb 2024

Pattern Recognition In Experienced Pediatric Nurses, Kathleen Wilson Neal

Dissertations

Little is known about how nurses build their knowledge beyond skills and tasks. Nurses may develop the ability to use a number of objective and subjective information sources to recognize the patterns of healthcare, behavioral, and social issues. The purpose of this study was to describe the development of pattern recognition in pediatric nurses in an acute care setting.

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2024 February 22 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University Feb 2024

2024 February 22 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

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High School Administrators’ Perspectives On Reducing Chronic Absenteeism Among African American Male Adolescents, Torrie Siemone Walker Feb 2024

High School Administrators’ Perspectives On Reducing Chronic Absenteeism Among African American Male Adolescents, Torrie Siemone Walker

Walden Dissertations and Doctoral Studies

The research problem for this study was that school administrators in an East Coast urban public school district in the United States inconsistently implemented leadership strategies to reduce the chronic absences of African American male high school students. Chronic absenteeism rates had led to decreased graduation rates and higher drug use and school dropout rates in the district. The purpose of this basic qualitative study was to explore high school administrators' perspectives on implementing situational theory strategies to address the challenges of reducing the chronic absenteeism of African American male high school students. Hersey and Blanchard’s theory of situational leadership …

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Research Experiences Via Integrating Simulations And Experiments (Revise): A Model Collaborative Research Project For Undergraduate Students In Co2 Sorbent Design, Anthony Griffin, Neziah Smith, Mark Robertson, Bianca Nunez, Jacob Mccraw, Haoyuan Chen, Zhe Qiang Feb 2024

Research Experiences Via Integrating Simulations And Experiments (Revise): A Model Collaborative Research Project For Undergraduate Students In Co2 Sorbent Design, Anthony Griffin, Neziah Smith, Mark Robertson, Bianca Nunez, Jacob Mccraw, Haoyuan Chen, Zhe Qiang

Physics & Astronomy Faculty Publications

Undergraduate research experiences are an instrumental component of student development, increasing conceptual understanding, promoting inquiry-based learning, and guiding potential career aspirations. Moving one step further, as research continues to become more interdisciplinary, there exists potential to accelerate student growth by granting additional perspectives through collaborative research. This study demonstrates the utilization of a model collaborative research project, specifically investigating the development of sorbent technologies for efficient CO2 capture, which is an important research area for improving environmental sustainability. A model CO2 sorbent system of heteroatom-doped porous carbon is utilized to enable students to gain knowledge of adsorption processes, through combined …

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