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An Introduction To Consumptive Use Of Water In South Carolina, Heather Bergerud Nix, Mani Rouhi Rad

Journal of South Carolina Water Resources

Effective water resource management requires understanding the supply of and the demand for water. In South Carolina, as in other places, water demand is often determined using total withdrawal volumes. However, the volume of water that is withdrawn can be significantly different from the volume that is actually consumed, which becomes unavailable for downstream uses. Water used for energy generation is commonly excluded from evaluations of total withdrawal volume because it is often assumed to be no or low consumptive use, meaning much of the withdrawn water is returned to the source and remains available for downstream uses. Additionally, energy …

Chlorophyll A Predictions In A Piedmont Lake In Upstate South Carolina Using Machine-Learning Approaches, Ibrahim O. Busari, Debabrata Sahoo, Raghavendra Jana, Charles Privette

Journal of South Carolina Water Resources

Freshwater systems are often breeding grounds for harmful algal blooms (HABs), although they are more dominant in ponds and lakes due to the prevailing conditions in those bodies of water. Therefore, the monitoring, modeling, and management of HABs requires knowledge of the complex interrelationship between factors that influence HABs and their detrimental effect on the ecosystem. High concentrations of chlorophyll a are often used to measure algal blooms in bodies of water. Generally, water samples are collected from the field and the concentration of chlorophyll a is measured in a laboratory and compared to water quality standards in order to …

On Sparse Coding As An Alternate Transform In Video Coding, Michael G. Schimpf

Engineering Ph.D. Theses

In video compression, specifically in the prediction process, a residual signal is calculated by subtracting the predicted from the original signal, which represents the error of this process. This residual signal is usually transformed by a discrete cosine transform (DCT) from the pixel, into the frequency domain. It is then quantized, which filters more or less high frequencies (depending on a quality parameter). The quantized signal is then entropy encoded usually by a context-adaptive binary arithmetic coding engine (CABAC), and written into a bitstream. In the decoding phase the process is reversed. DCT and quantization in combination are efficient tools, …

Investigation Of The Wear Behavior Of Dual-Matrix Aluminum–(Aluminum–Carbon Nanotube) Composites, Noha M. Abdeltawab, Amal M. K. Esawi, Abdalla Wifi

Faculty Journal Articles

No abstract provided.

Cebu Normal University Ms Mathematics Graduates:A Tracer Study, Roberto Corcino, Cristina Corcino, Edward Kiunisala

CNU Journal of Higher Education

This paper unveils the outcomes of a tracer study conducted on graduates who completed the Master of Science in Mathematics (MS Math) program at Cebu Normal University between 2015 and 2021. The primary objective of this tracer study is to discern the evolution in the career trajectories of these graduates, serving as a foundational element for evaluating the effectiveness of the MS Mathematics program at Cebu Normal University.

Implementation Of Blended Learning Modality:An Evaluation Based On Abcd Model, Edgermi Gingoyon

CNU Journal of Higher Education

In the integration of both online and face-to-face interactions, blended learning has become a significant educational approach. To examine its implementation, this study uses a descriptive-evaluation mixed-methods research design (quantitative and qualitative) to evaluate the implementation of the Blended Learning Modality based on ABCD Model. Using primary and secondary sources of data, adopted tools to measure learners’ satisfaction and engagement levels, and interview questions to validate participants’ responses, this study thoroughly evaluated the participants, programs, effects, and impact. Results show that the implementation of the program was effective in its effect on the satisfaction and engagement levels and academic performance …

The Sm R-Stirling Numbers: An Algebraic Approach, Roberto Corcino, Vernard Dechosa, Romeo Coronel, Vienna Mae Deveraturda

CNU Journal of Higher Education

The SM-Stirling numbers by Broder were initially defined through their combinatorial interpretation, and all essential properties and identities were obtained using a combinatorial approach. This paper introduces a slightly modified version of the -Stirling numbers through their exponential generating functions and derives all necessary properties and identities using an algebraic approach.

Comment On “Search For Explanation Of The Neutron Lifetime Anomaly”, F. E. Wietfeldt, R. Biswas, J. Caylor, Bret E. Crawford, M. S. Dewey, N. Fomin, G. L. Greene, C. C. Haddock, S. F. Hoogerheide, H. P. Mumm, J. S. Nico, W. M. Snow, J. Zuchegno

Physics and Astronomy Faculty Publications

We respond to issues raised by Serebrov et al. in a recent paper regarding systematic effects in the beam neutron lifetime experiment performed at NIST. We show that these effects were considered in the original analyses and that our corrections and systematic uncertainties were appropriate. We point out some misunderstandings in the analysis of Serebrov et al. None of the issues raised lead us to alter the value of the neutron lifetime reported.

A Comprehensive Review Of Dc-Dc Converters For Ev Applications, Shayan Hosseinzad, Amin Mirzaei

Emirates Journal for Engineering Research

DC-DC converters in Electric vehicles (EVs) have the role of interfacing power sources to the DC-link and the DC-link to the required voltage levels for usage of different systems in EVs like DC drive, electric traction, entertainment, safety and etc. Improvement of gain and performance in these converters has a huge impact on the overall performance and future of EVs. So, different configurations have been suggested by many researches. In this paper, bidirectional DC-DC converters (BDCs) are divided into four categories as isolated-soft, isolated-hard, non-isolated-soft and non-isolated-hard depending on the isolation and type of switching. Moreover, the control strategies, comparative …

A Fluid Flow Queuing Network Model For Performance Analysis Of Bulk Liquid Terminals, Debjit Roy, Werner Scheinhardt, Jan-Kees Van Ommeren

16th IMHRC Proceedings (Dresden, Germany- 2023)

Bulk liquid terminals play a crucial role in enabling the timely discharge and loading of liquid from the tankers and also facilitating oil transport to the hinterland via pipelines and external trucks. However, the speed of operations (and demurrage costs in the likely event of vessel handling delays) depends on the capacities of all terminal resources including berth, loading arms, and storage tank farms. Today, there is a limited understanding of how the interactions among the resources affect the overall vessel sojourn time performance. Using an integrated fluid flow simulation model of a bulk liquid terminal, we are able to …

Working Together- Scheduling Operations In Assisted Order Picking, Jelmer Pier Van Der Gaast

16th IMHRC Proceedings (Dresden, Germany- 2023)

Warehouse operations are becoming increasingly competitive due to the rise of e-commerce and same-day deliveries. To increase operational productivity, it is important to organize order picking as efficiently as possible. A new technology that is relatively cheap is assisted order picking (AOP). AOP involves human order pickers and pick robots working together to ensure customer orders are picked. It is easy to apply, does not require a major reconfiguration of the whole warehouse, and is scalable. In this paper, two variants of AOP are studied, and a mathematical optimization model is developed to minimize the makespan of picking a wave …

Optimization Of Cargo Handling Equipment At The Airport, David Sourek

16th IMHRC Proceedings (Dresden, Germany- 2023)

Delaying an aircraft during ground handling costs the airline a lot of money. In critical situations, it is even possible that some flights have to be canceled due to delays. It is therefore the endeavor of all personnel involved in ground operations that they proceed without delay. This paper shows what methods can be used to optimize the required number of handling equipment and what can affect its number.

Designing Facilities To Improve Flexibility: Zone-Based Dynamic Facility Layout, Sadan Kulturel-Konak, Abdullah Konak

16th IMHRC Proceedings (Dresden, Germany- 2023)

This paper considers solving the unequal area Dynamic Facility Layout Problem (DFLP) using a zone-based structure. Zone-based layouts have significant advantages, such as being easily transferable to a detailed layout with innately included possible aisle structures; therefore, they can be fitted to the unique needs of the layout designers. The unequal area DFLP is modeled and solved using a zone-based structure, which is referred to as ZDFLP, where the dimensions of the departments and material handling system input/output (I/O) points are decision variables. A two-phase matheuristic, which directly operates on Problem ZDFLP without requiring an encoding scheme of the problem, …

On Logistics And Motion Planning - An Informal Axiomatic Approach, Moritz Roidl

16th IMHRC Proceedings (Dresden, Germany- 2023)

Through the introduction of an informal axiomatic framework, this paper aims to contribute to the development of a general theory of logistics, which is currently still a blindspot in logistics research. It aims to combine the precision of robotic motion planning concepts with established logistics terminology, forging a link that balances the robustness of a mathematically rigorous theory with the rich semantic understanding inherent in logistics models. Centered around the notion of designing a logistic space, a possible way of structuring this space by grid-based and continuous spatial structures is discussed. The axiomatic framework is extended to include a new …

Handling Disruptions In A Network With Cross-Docking, Vishal Badyal, Fahim Ahmed, Nikhil Aditya Eti, Nathan Huynh, William Ferrell

16th IMHRC Proceedings (Dresden, Germany- 2023)

Cross-docking (CD) is a commonly used technique to consolidate freight for more efficient delivery to customers; CD is continuing to see increased use by companies. Synchronization of inbound and outbound freight is clearly critical to operations and so is having the cross-dock able to support the freight flow with available doors and material handling equipment. The latter is particularly important when there is a disruption in the inbound freight. One delayed truck can impact several outbound trucks. A methodology is proposed to address explicitly both the scheduling of trucks and material handling within the CD. Two models are proposed – …

Decision Rules For The Robotic Mobile Fulfillment System Of A Pcb Assembly Factory Warehouse, Ching-Jung Ting, Hendra Permana, Hsien-Mi Meng

16th IMHRC Proceedings (Dresden, Germany- 2023)

During the COVID-19 pandemic period, global supply chains are disrupted and most of the workers cannot go to the factories to work. Robotic mobile fulfillment system (RMFS) is one of the new types of autonomous, parts-to-picker system, designed especially for e-commerce warehouses. The system can increase the productivity of pickers. However, no research discussed the application of RMFS in manufacturing sector. This research simulates the picking process of a factory warehouse and studies the operational sub-problems which include order line assignment, station selection, pod selection, and pod storage assignment. Different decision rules of each operational problem are proposed and evaluated. …

Computational Fluid Dynamics Modeling Of A Wafer Etch Temperature Control System, Henrique Oyama, Kip Nieman, Anh Tran, Bernard Keville, Yewei Wu, Helen Durand

Chemical Engineering and Materials Science Faculty Research Publications

Next-generation etching processes for semiconductor manufacturing exploit the potential of a variety of operating conditions, including cryogenic conditions at which high etch rates of silicon and very low etch rates of the photoresist are achieved. Thus, tight control of wafer temperature must be maintained. However, large and fast changes in the operating conditions make the wafer temperature control very challenging to be performed using typical etch cooling systems. The selection and evaluation of control tunings, material, and operating costs must be considered for next-generation etching processes under different operating strategies. These evaluations can be performed using digital twin environments (which …

Analysis Of Ostds Failure Potential Due To Sea-Level Rise And Other Inundation Factors: An Integrated Geo-Spatial Analysis, Alec Colarusso

USF Tampa Graduate Theses and Dissertations

While many aspects of climate change are well-studied, the vulnerability of Onsite Sewage Treatment and Disposal Systems (OSTDS) to sea-level rise (SLR) has not been thoroughly examined despite the potentially significant environmental impacts, including nutrient and pathogen loading. Research gaps include the need to determine the suitability of models to predict groundwater inundation due to SLR and the consequent impact on OSTDS. As such, this study aims to compare Bathtub/hydrostatic and physics-based/MODFLOW/3D numerical modeling methods of simulating groundwater inundation from SLR to identify OSTDS vulnerability to failure due to a reduction in the height of the vadose zone (saturation or …

How Co-Designing Computational Modeling Activities Helped Teachers Implement Responsive Teaching Strategies, Hillary Swanson, Luettamae Lawrence, Jared Arnell, Allisia Dawkins, Bonni Jones, Bruce Sherin, Uri Wilensky

Instructional Technology and Learning Sciences Faculty Publications

In recent years, science education has shifted focus, from content to practice. This is reflected in the NGSS, which advocate learning science concepts through engagement in science and engineering practices. Theory building is a central activity of science and computational modeling is a key practice through which contemporary scientists construct theory. In this paper, we discuss an 8th grade science teacher's implementation of a computational modeling lesson. The teacher had co-designed the computational modeling microworld and lesson with the research team over the preceding summers. We investigate the teacher's activity during a whole-class discussion near the end of the lesson, …

Understanding Computational Thinking In The Gameplay Of The African Songo Board Game, Rebecca Y. Bayeck

Instructional Technology and Learning Sciences Faculty Publications

Computational thinking is a necessary skill for the 21st century. While previously examined in computer-rich settings, researchers are increasingly studying computational thinking in unplugged environments such as board games. Focusing on the African board game Songo, this study shows that computational thinking practices are embedded in Songo board gameplay and interact with the cultural context. The study also reveals a computing practice peculiar to Songo gameplay, songoputation. This paper suggests that researchers can benefit from exploring computational thinking and computing practices beyond board games in western contexts.

Applications In Opioid Analysis With Faims Through Control Of Vapor Phase Solvent Modifiers, Nathan Grimes

USF Tampa Graduate Theses and Dissertations

Field Asymmetric Ion Mobility Spectrometry (FAIMS), often coupled with mass spectrometry (MS), offers rapid analytical ion filtration, useful in reducing matrix interference and differentiating isomeric compounds. This study focuses on augmenting FAIMS-MS analyses through the incorporation of gas phase solvents, or "modifiers," inducing dynamic microsolvation, a particularly potent method of analysis enhancement.

Initially, the research utilized a bubbler-based system, incorporating a humidity sensor, improving modifier concentration control when using water. Our application in opioid detection and differentiation revealed considerable advancements. Notably, an increased peak capacity in an opioid mixture and successful separation of the isobaric opioid pair, alfentanil and ortho-isopropyl …

Cauchy-Type Integral Method For Solving The Linearized One-Dimensional Vlasov-Poisson Equation, Frank M. Lee, Bradley A. Shadwick

Department of Physics and Astronomy: Faculty Publications

We present a method for solving the linearized Vlasov-Poisson equation, based on analyticity properties of the equilibrium and initial condition through Cauchy-type integrals, that produces algebraic expressions for the distribution and field, i.e., the solution is expressed without integrals. Standard extant approaches involve deformations of the Bromwich contour that give erroneous results for certain physically reasonable configurations or eigenfunction expansions that are misleading as to the temporal structure of the solution. Our method is more transparent, lacks these defects, and predicts previously unrecognized behavior.

Peer Review Of Teaching: Et Theory, Deficit Irrigation And Consumptive Use, Derek M. Heeren, Saleh Taghvaeian

Department of Agricultural and Biological Systems Engineering: Presentations and White Papers

A BSE Peer Review of Teaching was carried out for a graduate level course on Advanced Irrigation Management. This course has been offered for several years; each time improvements are made, but there is always a need for additional improvement. In particular, ET theory, deficit irrigation, and consumptive use are topics that the students struggle to grasp. These topics involve a relatively high level of math for an MS-level (800-level) Agricultural Systems Technology course, and the available materials on these topics either were not well developed or were not a good fit for this class. The primary objective was to …

Students’ Knowledge Of And Attitudes Toward Dairy Production: A Survey Methodology Report, Heather Akin, Babatope Akinyemi, Julia Mcquillan, Tami Brown-Brandl

Department of Agricultural Leadership, Education, and Communication: Faculty Publications

This report presents findings from a pilot survey conducted among undergraduate and graduate students (N = 410) at the University of Nebraska-Lincoln about students’ perspectives on technology usage, consumption, and sustainability in dairy production systems. An interdisciplinary research team developed the survey instrument and report. The main purpose of this pilot study was to create and administer survey items to support further research on experiential education and outreach opportunities related to robotics in small-scale dairy production and rural economic development. Descriptive findings indicated that most students had some familiarity with dairy production and the nutritional aspects of dairy products …

Study On Versatile S(Vi) Reagents Towards Synthesis Of S(Iv) And S(Vi) Functional Groups, Shun Teng

USF Tampa Graduate Theses and Dissertations

This dissertation mainly covers the latest methodology development in the field of sulfur-containing functional groups in synthetic chemistry. There are two parts. The first part is the asymmetric synthesis of sulfoximines, sulfonimidamides, sulfonimidoyl fluorides, and sulfinamides enabled by a versatile enantiopure S(VI) reagent. The second part is the Grignard reagent-triggered divergent S-editing synthesis via a bench-stable S(VI) reagent.

In the first part, the asymmetric synthesis of sulfoximines, sulfonimidamides, sulfonimidoyl fluorides, and sulfinamides is reported. This report focuses on the development of a bifunctional S(VI) reagent and its utility in synthesis. It employed the enhanced stability of sulfonimidoyl fluorides and the …

Observation Of Robust Zero Energy Extended States, Jannatul Ferdous, Cem Yuce, Andrea Alu, Hamidreza Ramezani

Physics & Astronomy Faculty Publications

Topological edge states arise at the interface of two topologically distinct structures and have two distinct features: they are localized and robust against symmetry protecting disorder. On the other hand, conventional transport in one dimension is associated with extended states, which typically do not have topological robustness. In this letter, using lossy coupled resonators in one dimension, we demonstrate both theoretically and experimentally the existence of robust states residing in the bulk. We show that they are unusually robust against disorders in coupling between adjacent sites and losses. Our work paves the way to a different form of robust transport …

Optimal Estimation Inversion Of Ionospheric Electron Density From Gnss-Pod Limb Measurements: Part I-Algorithm And Morphology, Dong L. Wu, Nimalan Swarnalingam, Cornelius C. J. H. Salinas, Daniel J. Emmons, Tyler C. Summers, Robert Gardiner-Garden

Faculty Publications

GNSS-LEO radio links from Precise Orbital Determination (POD) and Radio Occultation (RO) antennas have been used increasingly in characterizing the global 3D distribution and variability of ionospheric electron density (Ne). In this study, we developed an optimal estimation (OE) method to retrieve Ne profiles from the slant total electron content (hTEC) measurements acquired by the GNSS-POD links at negative elevation angles (ε < 0°). Although both OE and onion-peeling (OP) methods use the Abel weighting function in the Ne inversion, they are significantly different in terms of performance in the lower ionosphere. The new OE results can overcome the large Ne oscillations, sometimes negative values, seen in the OP retrievals in the E-region ionosphere. In the companion paper in this Special Issue, the HmF2 and NmF2 from the OE retrieval are validated against ground-based ionosondes and radar observations, showing generally good agreements in NmF2 from all sites. Nighttime hmF2 measurements tend to agree better than the daytime when the ionosonde heights tend to be slightly lower. The OE algorithm has been applied to all GNSS-POD data acquired from the COSMIC-1 (2006–2019), COSMIC-2 (2019–present), and Spire (2019–present) constellations, showing a consistent ionospheric Ne morphology. The unprecedented spatiotemporal sampling of the ionosphere from these constellations now allows a detailed analysis of the frequency–wavenumber spectra for the Ne variability at different heights. In the lower ionosphere (~150 km), we found significant spectral power in DE1, DW6, DW4, SW5, and SE4 wave components, in addition to well-known DW1, SW2, and DE3 waves. In the upper ionosphere (~450 km), additional wave components are still present, including DE4, DW4, DW6, SE4, and SW4. The co-existence of eastward- and westward-propagating wave4 components implies the presence of a stationary wave4 (SPW4), as suggested by other earlier studies. Further improvements to the OE method are proposed, including a tomographic inversion technique that leverages the asymmetric sampling about the tangent point associated with GNSS-LEO links.

Why Did Titan Come To A Tragic End In The Depths Of The North Atlantic?, Daniel Bardsley, Jasper Graham-Jones

School of Engineering, Computing and Mathematics

News article about the Titan submersible.

Research On Stability Of Rock Mass And +30 Level Surface Construction Works When Re-Exploiting The Seam H10 At Mong Duong Coal Mine, Vietnam, Tien Trung Vu, Doan Viet Dao

Journal of Sustainable Mining

The re-exploitation of coal seams located near the ground is one of the solutions to increase output, reduce mining investment costs, and avoid wasting coal resources. The re-exploitation of coal seams will also cause instability of the surrounding rock mass and may affect surface construction works. Through the process of re-exploiting the longwall in seam H10 at Mong Duong Coal Mine, the authors have studied and evaluated the stability of the rock mass and +30 level surface works (including fan station and gateroad). To achieve the results in this study, the numerical simulation model method and the analytical method were …

Full Issue - Volume 9, Issue 1

Journal of South Carolina Water Resources

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