Digital Commons Network^™

Dynamics Of Human Fixed-Ratio Performance, Andrew E. Nuzzolilli

Doctoral Dissertations - College of Arts and Sciences

"Human sensitivity to fixed-ratio (FR) schedules was examined in terms of running rate, pre-ratio pause (PRP), inter-response time (IRT), response force, and verbal behavior. College students pressed a force transducer to produce access to video media under a variety of multiple FR schedules. During Experiment 1, ten students participated in a single session with juxtaposed small (FR 5) and large (FR 20, 40, and 80) schedules. For all participants except two, running rate was faster during the large ratio. Response latencies, subsuming both PRP and IRT, decreased within session. Response force also tended towards smaller values when comparing early and …

Actuarial Credibility Approach In Adjusting Initial Cost Estimates Of Transport Infrastructure Projects, Bartłomiej Rokicki, Krzysztof Ostaszewski

Faculty Publications – Mathematics

This paper presents a novel methodology based on the modified actuarial credibility approach. It allows for the adjustment of initial cost estimates of public infrastructure projects by accounting for the additional risk/uncertainty factor. Hence, it offers an interesting alternative to other existing forecasting methods. We test our approach by applying data for over 300 major infrastructure projects implemented in Poland between 2004 and 2020. We prove that, despite its simplicity, the actuarial credibility approach can deliver accurate cost estimates compared to more complex methods such as regression analysis (OLS) or machine learning (LASSO). In particular, we show that, although the …

Columbus State University Honors College: Senior Theses, Fall 2022/Spring 2023/Summer 2023, Les Anderson, Olympia Badwin, Ian Becerra, Lucy Clarke, Maya Davis, Kaylee Day, Dradley Defore, Rajvi Desai, Hannah Dickerson, Molly Foster, Andrew Holmes, Haley Johnson, Sana Khan, Nicole Kincaid, Kayleen Linge, Keenan Pasqua, Marc Pierre, Richard Rogers, Timothy Sabau, Kaitlyn Shepherd, Havahna Wilkes, Destinee Williams

Senior Theses from the Honors College

This is a collection of senior theses written by honors students at Columbus State University during the Fall 2022, Spring 2023, and Summer 2023 semesters.

Titles:

- "Mise En Scene: Healing Through a Cinematic Lense" , by Les Anderson

- "SCS22: Determining Molecular Function and Its Role in Heat Shock Protection in Saccharomyces Cerevisiae" , by Olympia Badwin

- "The Design and Activity of Novel Antimicrobial Hairpin Peptides" , Ian Becerra

- " Food Justice and Public Health: A Systematic Literature Review of Food Insecurity Prevalence among Black and Indigenous Populations Before and During COVID-19", by Maya Davis

- "The …

Celebrating 15 Years Of The Scholarship Of Teaching And Learning At Georgia Southern University, Delores D. Liston, Nikki Digregorio, Delena Bell Gatch, Joe Pellegrino

International Journal for the Scholarship of Teaching & Learning

This letter from the editors of IJ-SoTL introduces our 15th Anniversary Special Issue, celebrating 15 years of the Scholarship of Teaching and Learning (SoTL) at Georgia Southern University.

Comparison Of Student Outcomes In A Course-Based Undergraduate Research Experience: Face-To-Face, Hybrid, And Online Delivery Of A Biology Laboratory, Sue Ellen Dechenne-Peters, Elizabeth Sargent, Scott C. Mateer, Marylou Machingura, Jennifer Zettler, Traci Ness, Geneva Demars, Sherri Cannon, Jennifer Brofttbailey

International Journal for the Scholarship of Teaching & Learning

Course-based undergraduate research experiences (CUREs) incorporate authentic research instead of confirmatory exercises into laboratory courses. Following the COVID-19 pandemic, there has been a general shift in instructional modalities from face-to-face (F2F) towards hybrid and online teaching. Student impacts caused by the abrupt shift to online teaching have been characterized, but comparisons between modalities for CUREs are missing. Therefore, we evaluated student learning and attitudinal outcomes in F2F, hybrid, and online delivery of an introductory college biology CURE. Additionally, we compared student outcomes between White/Asian students and persons excluded due to ethnicity or race (PEER) in these modalities. There were significant …

Going With The Flow: Shifting Face-To-Face Pd To Fully Online In The Era Of Covid-19, Heather Scott, Lacey Huffling

International Journal for the Scholarship of Teaching & Learning

Immersive professional development is often used to provide teachers first-hand experience in developing placebased curricula. Knowing this, we had carefully crafted such a professional development for our participants to learn how to engage their students in local watershed research and ecology. However, following year one of a two-year grant-funded weeklong summer professional development opportunity for teachers in the Okefenokee Swamp, a shift to online instruction occurred due to COVID-19 related travel restrictions. Although the first summer in the swamp and the successive year of follow-up with teacher participants proved successful, the shift to online asynchronous instruction proved surprisingly successful as …

Introducing The Remote Mentoring Of Undergraduate Research Students (Rementurs) Workshop Series: Initial Evaluation And Plans For Wider Implementation, Elizabeth Sargent, Abid Shaikh, Karla Sue Marriott, Taysia Porter, Dawn N. Cannon-Rech, Shainaz M. Landge

International Journal for the Scholarship of Teaching & Learning

The primary objective of the Remote Mentoring of Undergraduate Research Students (ReMentURS) workshop series is to design a remotely available professional development training that will provide rigorous research concept and skills introduction to incoming undergraduate research students. This pilot run eight-week remote learning workshop series includes digital presentations, informational videos, virtual demonstrations, and aligned comprehension checks to foster student mindsets towards becoming independent research scientists. Preliminary assessment of the of ReMentURS program reveals that participants self-report gaining a variety of skills through the series and are likely to use the content in their future course and research laboratories. ReMentURS material …

Active Learning In Flipped Classroom And Tutorials: Complementary Or Redundant?, Matthew J. Mason, Angela M. Gayton

International Journal for the Scholarship of Teaching & Learning

Cambridge undergraduates have regular active-learning opportunities in small-group tutorials, in which they solve problems and discuss ideas based on course material. Would they see any value in performing similar tasks in flipped-classroom settings, or would they regard the introduction of a second active-learning modality as redundant? Following the replacement of traditional lectures with flipped teaching within three physiology courses, with tutorials ongoing, questionnaire responses showed that students felt that they learned and understood more, and felt better-prepared for exams. Although similarities were recognised, the context of the active learning evidently made flipped classroom and tutorial teaching feel very different, probably …

First Impressions Matter! An Experiment Comparing Autonomous And Controlling Language In Course Syllabi, Jully Paola Merchán Tamayo, Meredith Rocchi, Jenepher Lennox Terrion, Simon Beaudry

International Journal for the Scholarship of Teaching & Learning

The course syllabus serves as an important first contact between professors and students in university courses and the language used in a syllabus can influence students’ first impressions of the professor and expectations for the course. Existing research in Self-Determination Theory has shown that autonomy-supportive language leads to increased positive outcomes for students compared to controlling language. The objective of the present studies was to compare an autonomy-supportive with a controlling syllabus to see how students felt when reading the syllabus (Study 1), and how the syllabus related to their impressions of the professor, reported motivation, and expectations for the …

Looking Back, Looking Forward: A Retrospective Analysis Of A Pre-Service Teacher Preparation Course, Nancy G. Caukin, Heather K. Dillard, Terry Goodin, Ashlee B. Hover, John L. Carter

International Journal for the Scholarship of Teaching & Learning

This SoTL study aimed to determine thirty-eight teacher candidates’ self-efficacy after experiencing semester one of a yearlong residency. Researchers used a pre/post survey, the Teachers’ Sense of Efficacy Scale (TSES), and a retrospective pre TSES to determine perceived levels of self-efficacy in three areas: classroom management, instructional strategies, and student engagement. Findings revealed that pre TSES (candidates scored themselves at the beginning of the semester) and retrospective pre TSES scores (candidates scored themselves at the end of the semester reflecting on where they were at the beginning of the semester) were significantly different, with the retrospective pre TSES showing lower …

Tpack Tried And Tested: Experiences Of Post-Secondary Educators During Covid-19 Pandemic, Viola Manokore, Jeff Kuntz

International Journal for the Scholarship of Teaching & Learning

This article explores educators’ experiences during the rapid shift from face-to-face to emergency virtual remote teaching and learning as a result of the COVID-19 pandemic. One hundred and forty educators from a Canadian province completed a survey with Likert scale and open-ended questions designed to capture their application of technological pedagogical content knowledge (TPACK) during the pandemic. Data was collected during fall of 2020. More than 50% of the study participants reported that the quality of their practice declined as they shifted from face-to-face to remote teaching as a result of the pandemic. Educators’ descriptions of their virtual remote experiences …

Empathy In Education: A Critical Review, Ziqian Zhou Dr

International Journal for the Scholarship of Teaching & Learning

This paper offers a systematic review of the literature on the nature of empathy in educational research. This synthesis of the literature will reveal four salient themes that SoTL authors have used to understand the concept of empathy. The value of empathy, according to SoTL researchers, will also receive a summarized treatment in this paper. Findings from this first part of the paper promote more accurate interpretations and comparisons of publications about empathy. Relatedly, a less ambiguous definition of empathy allows researchers and practitioners to design more precise studies that attempt to measure empathy in tutors or students, and to …

Exploring The Effects Of Team-Based Learning In A Preservice Reading Methods Course, Lauren R. Brannan, Hannah D. Szatkowski

International Journal for the Scholarship of Teaching & Learning

Teacher educators are tasked with preparing preservice teachers with both the content and pedagogical knowledge and skills to teach children to read. In this study we investigated the use of team-based learning (TBL) in a reading methods course as a framework for improving student learning outcomes. TBL is an instructional approach that has been used across a variety of fields in higher education but has only recently made its way into teacher preparation programs. Using mixed methods, we compared TBL to the traditional lecture to explore whether participation in TBL affected preservice elementary teachers’ level of preparation for class, achievement …

Evidence For Metabolic Diversity In Meso-Neoproterozoic Stromatolites (Vazante Group, Brazil), Flavia Callefo, Fresia Ricardi-Branco, Mirian Mírian Liza Alves Forancelli Pacheco, Alexandre Ribeiro Cardoso, Nora Noffke, Verônica De Carvalho Teixeira, Itamar Tomio Neckel, Lara Maldanis, Emma Bullock, Dina Bower, Adalene Moreira Silva, Dario Ferreira Sanchez, Fabio Rodrigues, Douglas Galante

OES Faculty Publications

Deciphering the evolution of ecological interactions among the metabolic types during the early diversification of life on Earth is crucial for our understanding of the ancient biosphere. The stromatolites from the genus Conophyton cylindricus represent a datum for the Proterozoic (Meso to Neoproterozoic) on Earth. Their typical conical shape has been considered a result of a competition between microorganisms for space, light and nutrients. Well-preserved records of this genus from the "Paleontological Site of Cabeludo ", Vazante Group, São Francisco Craton (Southern Brazil) present in situ fossilized biofilms, containing preserved carbonaceous matter. Petrographic and geochemical analyses revealed an alternation between …

Coastal Upwelling Enhances Abundance Of A Symbiotic Diazotroph (Ucyn-A) And Its Haptophyte Host In The Arctic Ocean, Corday R. Selden, Sveinn V. Einarsson, Kate E. Lowry, Katherine E. Crider, Robert S. Pickart, Peigen Lin, Carin J. Ashjian, P. Dreux Chappell

OES Faculty Publications

The apparently obligate symbiosis between the diazotroph Candidatus Atelocyanobacterium thalassa (UCYN-A) and its haptophyte host, Braarudosphaera bigelowii, has recently been found to fix dinitrogen (N²) in polar waters at rates (per cell) comparable to those observed in the tropical/subtropical oligotrophic ocean basins. This study presents the novel observation that this symbiosis increased in abundance during a wind-driven upwelling event along the Alaskan Beaufort shelfbreak. As upwelling relaxed, the relative abundance of B. bigelowii among eukaryotic phytoplankton increased most significantly in waters over the upper slope. As the host’s nitrogen demands are believed to be supplied primarily by UCYN-A, …

Editorial: Carbon Cycling In Aquatic Critical Zones, Peng Yao, Thomas S. Bianchi, David J. Burdige, Xiaojuan Feng, Peter A. Raymond

OES Faculty Publications

No abstract provided.

Emerging Technologies And Approaches For In Situ, Autonomous Observing In The Arctic, Craig M. Lee, Michael Degrandpre, John Guthrie, Victoria Hill, Ron Kwok, James Morison, Christopher J. Cox, Hanumant Singh, Timothy P. Stanton, Jeremy Wilkinson

OES Faculty Publications

Understanding and predicting Arctic change and its impacts on global climate requires broad, sustained observations of the atmosphere-ice-ocean system, yet technological and logistical challenges severely restrict the temporal and spatial scope of observing efforts. Satellite remote sensing provides unprecedented, pan-Arctic measurements of the surface, but complementary in situ observations are required to complete the picture. Over the past few decades, a diverse range of autonomous platforms have been developed to make broad, sustained observations of the ice-free ocean, often with near-real-time data delivery. Though these technologies are well suited to the difficult environmental conditions and remote logistics that complicate Arctic …

Examining Ecological Succession Of Diatoms In California Current System Cyclonic Mesoscale Eddies, Zuzanna M. Abdala, Sophie Clayton, Sveinn V. Einarsson, Kimberly Powell, Claire P. Till, Tyler H. Coale, P. Dreux Chappell

OES Faculty Publications

The California Current System is a diatom-dominated region characterized by seasonal coastal upwelling and additional elevated mesoscale activity. Cyclonic mesoscale eddies in the region trap productive coastal waters with their planktonic communities and transport them offshore with limited interaction with surrounding waters, effectively acting as natural mesocosms, where phytoplankton populations undergo ecological succession as eddies age. This study examines diatom community composition within two mesoscale cyclonic eddies that formed in the same region of the California Current System 2 months apart and in the California Current waters surrounding them. The diatom communities were analyzed in the context of shifting environmental …

Seasonal Dynamics Of Dissolved Iron On The Antarctic Continental Shelf: Late-Fall Observations From The Terra Nova Bay And Ross Ice Shelf Polynyas, P. N. Sedwick, B. M. Sohst, C. O'Hara, S. E. Stammerjohn, B. Loose, M. S. Dinniman, N. J. Buck, J. A. Resing, S. F. Ackley

OES Faculty Publications

Over the Ross Sea shelf, annual primary production is limited by dissolved iron (DFe) supply. Here, a major source of DFe to surface waters is thought to be vertical resupply from the benthos, which is assumed most prevalent during winter months when katabatic winds drive sea ice formation and convective overturn in coastal polynyas, although the impact of these processes on water-column DFe distributions has not been previously documented. We collected hydrographic data and water-column samples for trace metals analysis in the Terra Nova Bay and Ross Ice Shelf polynyas during April-May 2017 (late austral fall). In the Terra Nova …

The Aquatic Particle Number Quandry, Alexander B. Bochdansky, Huanqing Huang, Maureen H. Conte

OES Faculty Publications

Optical surveys of aquatic particles and their particle size spectra have become important tools in studies of light propagation in water, classification of water masses, and the dynamics of trophic interactions affecting particle aggregation and flux. Here, we demonstrate that typical settings used in image analysis vastly underestimate particle numbers due to the particle – gel continuum. Applying a wide range of threshold values to change the sensitivity of our detection system, we show that macrogels cannot be separated from more dense particles, and that a true particle number per volume cannot be ascertained; only relative numbers in relation to …

Editorial: Advances In Understanding Lateral Blue Carbon Export From Coastal Ecosystems, Kai Xiao, Nengwang Chen, Zhaohui Aleck Wang, Joseph James Tamborski, Damien Troy Maher, Xuan Yu

OES Faculty Publications

No abstract provided.

Insights Into The Deglacial Variability Of Phytoplankton Community Structure In The Eastern Equatorial Pacific Ocean Using [231Pa/230Th]Xs And Opal-Carbonate Fluxes, Danielle Schimmenti, Franco Marcantonio, Christopher T. Hayes, Jennifer Hertzberg, Matthew Schmidt, John Sarao

OES Faculty Publications

Fully and accurately reconstructing changes in oceanic productivity and carbon export and their controls is critical to determining the efficiency of the biological pump and its role in the global carbon cycle through time, particularly in modern CO₂ source regions like the eastern equatorial Pacific (EEP). Here we present new high-resolution records of sedimentary ²³⁰Th-normalized opal and nannofossil carbonate fluxes and [²³¹Pa/²³⁰Th]xs ratios from site MV1014-02-17JC in the Panama Basin. We find that, across the last deglaciation, phytoplankton community structure is driven by changing patterns of nutrient (nitrate, iron, and silica) availability which, in …

Photorespiration In Eelgrass (Zostera Marina L.): A Photoprotection Mechanism For Survival In A Co₂-Limited World, Billur Celebi-Ergin, Richard C. Zimmerman, Victoria J. Hill

OES Faculty Publications

Photorespiration, commonly viewed as a loss in photosynthetic productivity of C3 plants, is expected to decline with increasing atmospheric CO₂, even though photorespiration plays an important role in the oxidative stress responses. This study aimed to quantify the role of photorespiration and alternative photoprotection mechanisms in Zostera marina L. (eelgrass), a carbon-limited marine C3 plant, in response to ocean acidification. Plants were grown in controlled outdoor aquaria at different [CO₂]aq ranging from ~55 (ambient) to ~2121 μM for 13 months and compared for differences in leaf photochemistry by simultaneous measurements of O₂ flux and …

A Subsurface Eddy Associated With A Submarine Canyon Increases Availability And Delivery Of Simulated Antarctic Krill To Penguin Foraging Regions, K. Hudson, M. J. Oliver, J. Kohut, Michael S. Dinniman, John M. Klinck, M. A. Cimino, K. S. Bernard, H. Statscewich, W. Fraser

OES Faculty Publications

The distribution of marine zooplankton depends on both ocean currents and swimming behavior. Many zooplankton perform diel vertical migration (DVM) between the surface and subsurface, which can have different current regimes. If concentration mechanisms, such as fronts or eddies, are present in the subsurface, they may impact zooplankton near-surface distributions when they migrate to near-surface waters. A subsurface, retentive eddy within Palmer Deep Canyon (PDC), a submarine canyon along the West Antarctic Peninsula (WAP), retains diurnal vertically migrating zooplankton in previous model simulations. Here, we tested the hypothesis that the presence of the PDC and its associated subsurface eddy increases …

Subsurface Eddy Facilitates Retention Of Simulated Diel Vertical Migrators In A Biological Hotspot, K. Hudson, M. J. Oliver, J. Kohut, J. H. Cohen, Michael S. Dinniman, John M. Klinck, C. S. Reiss, G. R. Cutter, H. Statscewich, K. S. Bernard, W. Fraser

OES Faculty Publications

Diel vertical migration (DVM) is common in zooplankton populations worldwide. Every day, zooplankton leave the productive surface ocean and migrate to deepwater to avoid visual predators and return to the surface at night to feed. This behavior may also help retain migrating zooplankton in biological hotspots. Compared to fast and variable surface currents, deep ocean currents are sluggish, and can be more consistent. The time spent in the subsurface layer is driven by day length and the depth of the surface mixed layer. A subsurface, recirculating eddy has recently been described in Palmer Deep Canyon (PDC), a submarine canyon in …

Frameless-Finding And Refining A Sampling Frame For Surveying Recreational Fisheries: Lessons From Estimating Swedish Harvest Of Western Baltic Cod, Hege Sande, Nuno Prista, Annica De Groote, Michele Casini, Cynthia Jones, Andreas Sundelöf

OES Faculty Publications

To achieve sustainable fisheries, advice to management should be based on reliable science and unbiased data. Attaining quality data (i.e. precise and unbiased) on recreational fishing can be challenging, particularly when prior knowledge of the sector is limited and a proper sample frame of recreational fishers or vessels does not exist. In this study, a registry of access points was constructed for the Swedish south–west coast and used as a spatial sample frame in determining both effort and catches of the private boat fishery. Sampling dates, times for sampling, and access points visited were selected using probabilistic methods, ensuring unbiased …

Calcification, Dissolution And Test Properties Of Modern Planktonic Foraminifera From The Central Atlantic Ocean, Stergios D. Zarkogiannis, Shinya Iwasaki, James William Buchanan Rae, Matthew W. Schmidt, P. Graham Mortyn, George Kontakiotis, Jennifer E. Hertzberg, Rosalind E.M. Rickaby

OES Faculty Publications

The mass of well-preserved calcite in planktonic foraminifera shells provides an indication of the calcification potential of the surface ocean. Here we report the shell weight of 8 different abundant planktonic foraminifera species from a set of core-top sediments along the Mid-Atlantic Ridge. The analyses showed that near the equator, foraminifera shells of equivalent size weigh on average 1/3 less than those from the middle latitudes. The carbonate preservation state of the samples was assessed by high resolution X-ray microcomputed tomographic analyses of Globigerinoides ruber and Globorotalia truncatulinoides specimens. The specimen preservation was deemed good and does not overall explain …

Simulated Response Of St. Joseph Bay, Florida, Seagrass Meadows And Their Belowground Carbon To Anthropogenic And Climate Impacts, Marie Cindy Lebrasse, Blake A. Schaeffer, Richard C. Zimmerman, Victoria J. Hill, Megan M. Coffer, Peter J. Whitman, Wilson B. Salls, David D. Graybill, Christopher L. Osburn

OES Faculty Publications

Seagrass meadows are degraded globally and continue to decline in areal extent due to human pressures and climate change. This study used the bio-optical model GrassLight to explore the impact of climate change and anthropogenic stressors on seagrass extent, leaf area index (LAI) and belowground organic carbon (BGC) in St. Joseph Bay, Florida, using water quality data and remotely-sensed sea surface temperature (SST) from 2002 to 2020. Model predictions were compared with satellite-derived measurements of seagrass extent and shoot density from the Landsat images for the same period. The GrassLight-derived area of potential seagrass habitat ranged from 36.2 km2 …

Defining The Realized Niche Of The Two Major Clades Of Trichodesmium: A Study On The West Florida Shelf, Kristina A. Confesor, Corday R. Selden, Kimberly E. Powell, Laura A. Donahue, Travis Mellett, Salvatore Caprara, Angela N. Knapp, Kristen N. Buck, P. Dreux Chappell

OES Faculty Publications

The cyanobacterium Trichodesmium plays an essential role supporting ocean productivity by relieving nitrogen limitation via dinitrogen (N-2) fixation. The two common Trichodesmium clades, T. erythraeum and T. thiebautii, are both observed in waters along the West Florida Shelf (WFS). We hypothesized that these taxa occupy distinct realized niches, where T. thiebautii is the more oceanic clade. Samples for DNA and water chemistry analyses were collected on three separate WFS expeditions (2015, 2018, and 2019) spanning multiple seasons; abundances of the single copy housekeeping gene rnpB from both clades were enumerated via quantitative PCR. We conducted a suite of statistical …

Biofilm Harvesters In Coastal Settings Of The Early Palaeozoic, Nora Noffke, M. Gabriela Mángano, Luis A. Buatois

OES Faculty Publications

The ichnogenera Syringomorpha and Daedalus are here interpreted as products of infaunal biofilm harvesters. This study investigated: (1) Syringomorpha nilssoni and Syringomorpha isp. from the Cambrian Series 2‐Miaolingian Campanario Formation, northwest Argentina; and (2) Daedalus halli from the Floian Grès et Schistes de la Cluse de l’Orb Formation, Montagne Noire, France. Syringomorpha nilssoni occurs in sandy to mixed intertidal to lower shoreface deposits, whereas Syringomorpha isp. in the lower intertidal zone. Daedalus halli occurs in a lagoon and intertidal to lower shoreface sands of a barrier island. Syringomorpha and Daedalus comprise a vertical J‐shaped causative burrow and deep spreite. These …