Digital Commons Network^™

Data-Driven Analysis For Causality Of Parent–Child Interactions In The Bakken, Kyoung Min, Alexander V. Chakhmakhchev, Xue Yu, Nicholas A. Azzolina, Darren D. Schmidt, Bethany A. Kurz, James A. Sorensen

EERC Publications, Papers, & Presentations

This study 1) evaluates the effect of parent–child interaction on productivity by assessing depletion effects and the impact of different completion designs and 2) investigates how refracturing strategies affect parent–child interactions.

Developing A High-Efficiency Method For Field-Scale Simulation Of A Tight And Naturally Fractured Reservoir In The Williston Basin, Xincheng Wan, Lu Jin, Tao (Todd) Jiang, James A. Sorensen, Chenyu Wu, Ahmed Merzoug

EERC Publications, Papers, & Presentations

A novel FDO (fracture and DRV optimization) workflow was proposed in this study to better reproduce the production and water injection history of a tight reservoir with natural fractures in the Williston Basin. Compared to most of the published work in this area, the FDO workflow can significantly improve the simulation efficiency for field-scale simulation models considering the presence of a complex natural fracture network.

Spring Commencement: May 13, 2023, University Of North Dakota

UND Commencement Programs

UND Spring Commencement program from May 13, 2023.

Contributor Notes

Floodwall Magazine

No abstract provided.

Time Piece, Katerina Sladko

Floodwall Magazine

No abstract provided.

An Ode To Fiji And Its Visitors, Katerina Sladko

Floodwall Magazine

No abstract provided.

Slice Of Life, Melanie Schindler

Floodwall Magazine

No abstract provided.

Membrane Science Meets Machine Learning: Future And Potential Use In Assisting Membrane Material Design And Fabrication, Musabbir J. Talukder, Ali Alshami, Arash Tayyebi, Nadhem Ismail, Xue Yu

Chemical Engineering Faculty Publications

The evolving membrane technology integrated with machine learning (ML) algorithms can significantly advance the novel membrane material design and fabrication. Although several studies have reported ML-based assistance in membrane development, none of them have offered a complete analysis of existing ML-assisted membrane fabrication methods from material design perspective. A two-way information gateway is therefore necessary to achieve the desired objective, whereby experienced researchers and data scientists from both sides need to provide valuable insights into novel membrane development process. In this work, we offer a midway platform by providing an overall view and scopes of ML uses in membrane science. …

Sociopaths Have Formed Social Media, Alexandra Drews

Arts & Sciences Undergraduate Showcase

This philosophical analysis delves into the complex and interwoven dynamics between social media and two of Adam Kotsko's subcategories of Sociopathy, namely the "Climbers" and the "Schemers." By scrutinizing their motivations and behaviors within the realm of social media, this inquiry reveals the profound consequences that emerge from their actions. The "Climbers," driven by an insatiable desire for social status, exhibit a propensity for betraying others to achieve personal gain. Conversely, the "Schemers" engage in impulsive behaviors, prompted by an inherent need to alleviate boredom. Moreover, it becomes evident that the interplay between these subcategories has not only spawned a …

Warp Test, Jonathan Sladko

Floodwall Magazine

No abstract provided.

The History, Evolution, And Maintenance Of Violin Strings, Iva Pecotić

Theses and Dissertations

No abstract provided.

Single-Phase Controlled Full-Wave Thyristor Bridge Rectifier With Rl Load And Continuous Current, Haruka Kido

Electrical Engineering Student Publications

This report investigates the power electronics design of a Single-Phase Controlled Full-Wave Thyristor Bridge Rectifier with RL Load and Continuous Current through PSIM circuit simulations, the calculation for and the generation of circuit parameters, and analysis of underlying principles causing thyristor switching effects, load outputs, and generations of circuit’s SIMVIEW waveforms.

Image Inpainting Methods: Digital Image Reconstruction And Restoration, Haruka Kido

Electrical Engineering Student Publications

This report investigates the digital image processing of image inpainting methods, particularly for digital image reconstruction and restoration through the two computational tools grouped into: [1] MatLAB/Image Segmenter and [2] Anaconda/OpenCV/Python. The use cases explored in the project involve image reconstruction and restoration of celestial imageries for means of clear demonstration and subject-matter consistency but can extend to more artistic purposes involving the removal of unwanted objects within the backgrounds or foregrounds of images that can be “erased” or “hidden” by being replaced by neighboring pixels of similar characteristics for image reconstruction and the removal of damaged parts observed in …

The Lagrange Logistics Method, Jeffrey Rogers

Space Studies Student Publications

Human development into different environments has always required logistics support to sustain life, focusing this research on one method in supporting interplanetary missions beyond Earth. It explores utilizing stations in Lagrange orbital points within the solar system, analogous to transcontinental hubs for logistics operations in an emerging domain. The evaluation considers available Lagrange points, environmental considerations including available resources, flight distances and time in comparison to current interplanetary flight, potential risks, and possibilities beyond the immediate future to determine the practicability of this method. To determine this, a qualitative descriptive analysis method is employed. Data was collected through historical accounts, …

Technical And Regulatory Factors Of Adopting Electric Training Aircraft In A Collegiate Aviation Setting, Nick Wilson, Lewis Archer, Ryan Guthridge, Jeremy Roesler, Michael Lents

Aviation Faculty Publications

Electric-powered aircraft have entered the market. The arrival of the Pipistrel Velis Electro and other developmental efforts by companies such as Bye Aerospace, Piper, and eViation, have signaled to the aviation community that more electric-powered aircraft can be expected in the coming years. But how useful are they for training pilots in a Federal Aviation Administration (FAA) approved Part 141 collegiate aviation environment? To identify candidate flight courses and lessons, the authors examine flight hour distributions of a one-year window of invoiced flights (N = 52,728), including flight hour data cut-points at 60 minutes (n = 6,050) and 90 minutes …

Influence Of Workplace Microaggressions On Engineering Female Faculty Motivation To Do Research, Mojdeh Mardani, Robert H. Stupnisky

Education, Health & Behavior Studies Faculty Publications

Negative and often unconscious beliefs about marginalised groups, including women and people of colour, sometimes manifest in discriminatory and degrading slights called microaggressions. Since most often microaggressions are in the form of subtle actions, unobtrusive comments, or humorous gestures, they are frequently overlooked as innocent and harmless, specifically to bystanders. However, their adverse effects on those on the receiving end are anything but innocuous, even if perpetrators are utterly unaware of their harmful comments or behaviours. Minorities and marginalized individuals often find microaggressions more harmful than blatant racism and discrimination. Six hundred and eleven STEM (Science, Technology, Engineering, Math) faculty …

Spring 2023, University Of North Dakota Alumni Association

ALL: UND Alumni Review Master List

Spring 2023 issue of "The University of North Dakota Alumni Magazine." 52 pages

Volume 106, Number 2

Associations Between Screen Use And Depression In The Youth Population, David Franta

Physician Assistant Scholarly Project Papers

The association between depression in the youth population and screen use has remained largely unclear. Depression is a common finding in children and adolescents, and as mobile phones, computers, and television are becoming more readily available to young populations, evaluation of the relationship between the two could likely be very important. Unfortunately, little concrete evidence has been established regarding the direct effects of screen time and the presence or development of depression. A literature review comprised of both cross-sectional and longitudinal studies was performed to evaluate the current literature regarding screen use and depression in the youth population, including differences …

Pregnancy Planning: Hormonal Contraception Versus Natural Family Planning, Melanie Loehrer

Physician Assistant Scholarly Project Papers

Statement of the problem: Natural family planning methods provide women with an opportunity to use natural methods to plan pregnancy. This is done through daily monitoring of symptoms and biomarker fluctuation in accordance with hormonal changes throughout the menstrual cycle to identify the fertile window. Through the identification of the fertile window and ovulation, one can determine appropriate days for sexual intercourse. This format allows participants to develop a greater understanding and in-depth knowledge of reproductive health to avoid or achieve pregnancy. The use of natural family planning has greatly increased over the last two decades, growing the demand for …

Blood-Based Versus Stool-Based Biomarker Accuracy In Detection Of Colorectal Cancer And Impact Of Non-Invasive Tests On Patient Participation, Allison Obritsch

Physician Assistant Scholarly Project Posters

Colorectal cancer is a very treatable cancer when detected early, therefore patient adherence and colorectal cancer screening is key to decrease mortality. The purpose of this research and systematic literature review was to determine how the accuracy of blood-based and stool-based biomarkers compared in the detection of colorectal cancer and how noninvasive testing modalities influence patient participation in colorectal cancer screening. PubMed and Clinical Key were used as search engines. In terms of patient compliance and adherence, the studies comprehensively agree that non-invasive testing modality availability can increase patient participation in screening for colorectal cancer. While there was not significant …

Roundtable: Issue 2, Mackenzie Amerman, Kalyn Bohrer, Eliza Schueneman, Victoria Voss

Roundtable: Journal of the UND Honors Program

No abstract provided.

Sustainable Management Of Dams And Reservoirs In North Dakota: Sediment Transport Characterization, Adewale Ajao, Yeo Howe Lim

Civil Engineering Posters and Presentations

Selected reservoirs in the state of North Dakota was surveyed to assess their storage capacity, sedimentation characteristics, water quality parameters, and check for leakage. The purpose of the study is to understand the dynamic of reservoir sedimentation in North Dakota and the effect on its resiliency and sustainability. The HYCAT, which is an autonomous surface vehicle, was interfaced with a side scan sonar and global positioning system. The side scan sonar soundings at a determined frequency was used to measure reservoir bed level and deposited sediments while the positioning system would provide information along the grid lines. Additionally, this bathymetry …

Image-Based Corrosion Detection In Ancillary Structures, Amrita Das, Eberechi Ichi, Sattar Dorafshan

Civil Engineering Faculty Publications

Ancillary structures are essential for highways’ safe operationality but are mainly prone to environmental corrosion. The traditional way of inspecting ancillary structures is manned inspection, which is laborious, time-consuming, and unsafe for inspectors. In this paper, a novel image processing technique was developed for autonomous corrosion detection of in-service ancillary structures. The authors successfully leveraged corrosion features in the YCbCr color space as an alternative to the conventional red–green–blue (RGB) color space. The proposed method included a preprocessing operation including contrast adjustment, histogram equalization, adaptive histogram equalization, and optimum value determination of brightness. The effect of preprocessing was evaluated against …

Texas 2021 Power Blackout: Analysis And Solutions​, Farishta Rahman, Kolten Oberg, Ajit Srinivas, Prakash Ranganathan

Electrical Engineering Posters and Presentations

In February 2021, severe winter storms caused widespread power outages throughout Texas. Initially, windmills were blamed for the loss of power, but the impact was more widespread, halting major infrastructure for weeks and having significant economic consequences. This poster provides an overview of the occurrence, its economic impact, investigates its causes, and offers recommendations for winterizing Texas' energy infrastructure, including power plants, windmills, and other Distributed Energy Resources (DERs).

Characterization And Treatment Of Bakken Oilfield Produced Water, Mousa Almousa

Graduate Research Achievement Day Posters

Produced water in the unconventional U.S. Bakken oilfield has become a significant concern since oil and gas production growth has been substantial, and operating costs are increasing. Reusing this considerable amount of produced water has become necessary since the treated water can be used for potable supplies, irrigation, deep well injection, maintenance, and fracking, which improves profits and mitigates groundwater pollution. The total dissolved solids (TDS) in the ND Bakken formation are greater than 300g/l, which is much higher than the concentration of salt in seawater; therefore, it is reasonable to propose selective precipitation to treat the salts found in …

Investigating Liquid Droplets And Ice Crystals In The Atmosphere And Their Potential Damage To Hypersonic Vehicles, Imteaz Osmani, Hallie Boyer Chelmo

Graduate Research Achievement Day Posters

Ice crystal aggregates found in stratospheric clouds are detrimental to hypersonic flights. This poster demonstrates a method for generating ice crystals in the lab without physical touch using electrodynamic balance and shares a plan in upcoming years for investigating ice crystal interaction with shock waves.

Design And Performance Analysis Of Dry Gas Fishbone Wells For Lower Carbon Footprint, Habib Ouadi, Aimen Laalam, Amjed Hassan, Abderraouf Chemmakh, Vamegh Rasouli, Mohamed Mahmoud

Petroleum Engineering Student Publications

Multilateral well drilling technology has recently assisted the drilling industry in improving borehole contact area and reducing operation time, while maintaining a competitive cost. The most advanced multilateral well drilling method is Fishbone drilling (FbD). This method has been utilized in several hydrocarbon fields worldwide, resulting in high recovery enhancement and reduced carbon emissions from drilling. FbD involves drilling several branches from laterals and can be considered as an alternative method to hydraulic fracturing to increase the stimulated reservoir volume. However, the expected productivity of applying a Fishbone well from one field to another can vary due to various challenges …

March 2, 2023: Agenda, University Of North Dakota

University Senate Meeting Minutes

Agenda for the March 2, 2023, meeting of the University Senate. 26 pages

Evaluation Of Liquid Loading In Gas Wells Using Machine Learning, Abderraouf Chemmakh, Olusegun Stanley Tomomewo, Kegang Ling, Ahmed Shammari

Petroleum Engineering Student Publications

The inevitable result that gas wells witness during their life production is the liquid loading problem. The liquids that come with gas block the production tubing if the gas velocity supplied by the reservoir pressure is not enough to carry them to surface. Researchers used different theories to solve the problem naming, droplet fallback theory, liquid film reversal theory, characteristic velocity, transient simulations, and others. While there is no definitive answer on what theory is the most valid or the one that performs the best in all cases. This paper comes to involve a different approach, a combination between physics-based …

Progress And Development Of Syngas Fermentation Processes Toward Commercial Bioethanol Production, Ademola Owoade, Ali Alshami, David Levin, Sagheer Onaizi, Zuhair O. Malaibari

Chemical Engineering Faculty Publications

Syngas is created through the thermochemical conversion of biomass using gasification or pyrolysis and from CO-rich off-gases obtained from industries such as steel mills. The Wood–Ljungdahl metabolic pathway, or one of its variations, is used by acetogenic bacteria to convert syngas components (CO, H₂, and CO₂) to alcohols and other compounds. Many factors affect how well syngas is fermented, including the bacteria species used, syngas composition, medium components, bioreactor type, operational parameters used and the gas–liquid mass transfer rate. These parameters impact carbon and electron flow in the bacteria, influencing the distribution, concentration and metabolic end-product …