Digital Commons Network^™

Operation Strategy Simulation Of The Heating System For Moderately Deep Geothermal Resources, Zhao Yongzhe, Zhao Baofeng, Hu Zhenyang, Gou Li, Du Dingshan, Liu Chenglu

Coal Geology & Exploration

Background The active utilization of moderately deep geothermal resources for heating serves as a critical measure to achieve the goals of peak carbon dioxide emissions and carbon neutrality. Meanwhile, the effectiveness of the operation strategies of the heating system using these resources directly influences heating performance and significantly affects the energy consumption of the heating system. It is necessary to prevent resource waste while utilizing geothermal energy. Methods Based on a heating project using moderately deep geothermal resources in the Guanzhong Basin, Shaanxi Province, this study established a dynamic simulation model using the TRNSYS transient simulation software. Then, this study …

Fracture Activation In The Overburden And Aquiclude Stability Under The Mining Of Close-Distance Coal Seams, Cao Jian, Su Haitao, Wang Chao, Li Jianwei, Li Liang, Mao Xuwei

Coal Geology & Exploration

Background In the Jurassic coalfield of northern Shaanxi Province, the repeated mining of close-distance coal seams exacerbates the activation of fractures in the overburden. This is prone to cause aquiclude instability, leading to groundwater loss. Methods This study aims to reveal the characteristics of fractures in the overburden and the aquiclude stability in the mining of close-distance coal seams. Using a method combining measurement statistics, physical simulations using similar materials, and theoretical analysis, this study proposed categorizing primary coal-rock combinations based on the water-preserved mining of close-distance coal seams in the Jurassic coalfield of northern Shaanxi. Additionally, this study analyzed …

Inversion Of Electric Field Component EX In The Sotem Method Based On The Improved Particle Swarm Optimization Algorithm, Zhang Jifeng, Chen Changjian, Li Yuteng, You Xiran, Ma Ziben

Coal Geology & Exploration

Objective The inversion of the horizontal electric field component in the grounded-source short offset transient electromagnetic (SOTEM) method using traditional algorithms is prone to fall into local extrema. To address this challenge, this study proposed an improved particle swarm optimization (PSO) algorithm that integrates the center of gravity reverse learning strategy. Methods Based on the center of gravity reverse learning strategy, the improved PSO algorithm can dynamically adjust learning factors and the value of the adaptive inertia weight, thus improving the global search capability and convergence efficiency effectively. The performance of the improved PSO algorithm was verified using the typical …

Characteristics Of Dynamic Mode Ⅱ Fracture Of Frozen Saturated Sandstones Under Varying Low Temperatures And Loading Rates, Zhao Tao, Cui Zhao, Jia Hailiang, Yang Guangyu

Coal Geology & Exploration

Background Investigating the mode Ⅱ fracture of frozen saturated sandstones under dynamic disturbances, including changes in their critical stress intensity factor (SIF; i.e., fracture toughness) and energy dissipation mechanisms, is crucial for the safe excavation of frozen wellbores through drilling and blasting in coal mines. Methods Using a split Hopkinson pressure bar (SHPB), this study conducted experiments on the dynamic mode Ⅱ fracture of a sandstone specimen using the short core in compression (SCC) method (also referred to as dynamic SCC experiments) under varying temperatures and loading rates. Accordingly, this study analyzed the SIF versus time curves of the frozen …

An Experimental Study On The Yield Strength Of Cement Grout For Grouting In The Limestone Area Of A Coal Seam Floor, Zou Jun, Guo Yan, Gui Herong, Wang Weimin, Chen Zhenlin, Liu Faming, Dai Yanan, Hu Yang, Chen Zengbao, Li Jun, Gao Chuan, Li Heng

Coal Geology & Exploration

Objective and Methods In recent years, regional grouting through ground directional drilling has become the preferred technique for water disaster prevention and control in floor limestones in a coal mining area. In grouting engineering, the diffusion radius of cement grout, which has always received wide attention, is constrained by multiple factors including the shear yield strength (yield strength for short) and specific gravity of cement grout, along with grouting pressure. The diffusion radius in turn influences the implementation effects of on-site grouting engineering. Among its controlling factors, the yield strength of cement grout cannot be tested on site. Given this, …

Critical Technical Parameters Of Large-Diameter Multi-Stage Casing Drilling For Mine Rescue, Xu Chao, Yao Ningping, Jiang Lei, Tian Hongjie, Liu Zhi, Zhu Ning

Coal Geology & Exploration

Objective This study aims to meet the needs of mine rescue in cave-in accidents occurring in narrow underground spaces and to address the contradiction between equipment miniaturization and the drilling of large-diameter rescue boreholes under complex collapse conditions. Based on the goal of constructing a 60-m-long rescue passageway, this study developed a dual-power, composite drilling process based on multi-stage casing drilling technology for large-diameter horizontal rescue boreholes under complex collapse conditions. Furthermore, this study investigated the critical drilling parameters, aiming to provide a basis for the function development and parameter formulation of rescue equipment. Methods This study designed supporting three-stage …

Application Of Five Seismic Attributes In Natural Fracture Prediction For Deep Coalbed Methane Production Along The Eastern Margin Of The Ordos Basin, Tong Jiangnan, Wang Feng, Zhang Feng, Hou Wei, Li Zhongbai, Ji Liang, Jiang Yanan, Sun Wei

Coal Geology & Exploration

Background Natural fractures serve as both the primary storage space for free gas of deep coalbed methane (CBM) and pathways for hydrocarbon migration. Furthermore, these fractures can enhance the porosity and permeability of strata under the deep, high-pressure condition, significantly amplifying the permeability of coal seams. Therefore, the fine-scale characterization of the planar distribution of natural fractures is crucial to deep CBM production.Objectives and Methods This study investigated the No.8 coal seam in the Carboniferous Benxi Formation within the Daning-Jixian block on the eastern margin of the Ordos Basin. Through offset vector tiles (OVT) domain processing of offshore 3D …

Learning Disabilities Summary, Michael L. Woodward, Lisa L. Persinger

Essays in Developmental Psychology

No abstract provided.

Stephen J. Ceci, Rachel Zachar, Lisa K. Lashley, Charles J. Golden

Essays in Developmental Psychology

No abstract provided.

Entropy-Guided Transformers For Sentiment Prediction, Pedro H. Batista De Moura

Mathematics and System Engineering Student Publications

The use of an entropy-based loss function to improve BERT’s sentiment analysis on the Stanford Sentiment Treebank (SST-2) dataset. By studying entropy trends in a fine-tuned BERT model, we crafted a custom loss that stabilizes entropy in early layers (1–9) and penalizes entropy rises in later layers (10–12) using a mean entropy threshold. Our approach achieved 92.09% accuracy and a 92.31% F1 score, surpassing a cross-entropy baseline by 1.95%. These results highlight entropy-guided optimization’s potential for transformer models.

Finite Element Spaces Of Double Forms, Lily Dipaulo

Mathematics and System Engineering Student Publications

Many real-world problems lack exact solutions and require numerical methods for accurate approximations. These methods are essential in solid mechanics, computer graphics, etc.

Study Habits And Review Sessions, Lillian Gottstine

Fisher Showcase 2025

Seeing the outcomes of using and teaching different studying habits in a review session to see the effects on student preparedness for unit exams.

"Exploring The Training Data Landscape For Ai Based Threathunting For Protecting Intellectual Property", Manzi Siibo, Christopher Kreider

Cybersecurity Undergraduate Research Showcase

This study provides a comprehensive evaluation of the effectiveness that would result in the integration of AI into traditional threat hunting systems. To do so, 10-15 scholarly articles and data sets were evaluated to see the results of AI and machine learning threat hunting versus traditional systems. With so many proven benefits of this integration, this paper also explores how it impacts the protection of Intellectual property which is some of the most important forms of information that threat hunting systems aim to protect.

Using Social Emotional Learning To Connect Social Awareness And Classic Literature, Erin Anderson

Honors Projects

The following case study explores how social-emotional learning (SEL) teaching strategies enhance seventh-grade students’ engagement with classic literature during English Language Arts (ELA) class. Using S.E. Hinton’s classic novella The Outsiders as a foundation for this research, this study examines whether SEL-based lesson plans help adolescents make deeper connections between literature and their own lives. Two groups of students were compared in the study: one group received traditional, comprehension-based instruction, while the other participated in SEL-based assessments, encouraging perspective-taking and personal reflection. This study utilizes qualitative assessments like character analysis, reflection, and surveys to affirm that students who are exposed …

Changing Salaries: Salary Constraints In North American Sports, Reese Shull

Honors Projects

The structure, impact, and potential future of the cap systems housed by the primarily North American sports leagues, NFL, NBA, and MLB, are examined. By comparing each of the different constraint models used to influence competitive balance, player compensation, and various team-building strategies, a comprehensive understanding of which league operates more effectively. Paramount is the relationship to rising revenues and the different returning and emerging channels that are being formed.

Young Professionals, Zachary Gibson

Journal Articles

Like many of us, I have attended numerous panels, seminars, and workshops geared toward helping young professionals and students. The more senior professionals are gathered for us to question and tap them for wisdom and anecdotes. One such question that inevitably comes up in one form or another is, “How did you get to where you are?” A thinly veiled question intending to ask how can one get to the same or similar position. The response often begins with a soft chuckle and a “well … ” Their answers are caveated by “my path was not the typical path.”

The Minutes Of The Marshall University Graduate Council Meeting, April 25, 2025, Marshall University Graduate Council

Graduate Council Minutes

No abstract provided.

Effect Of Migration Conditions On Copper Migration From Regreen Indocalamus Leaves, Liu Liping, Zhang Zhijun, Shen Honggui, Luo Hongquan, Chen Haiqun

Food and Machinery

［Objective］ To analyze the effects of migration temperature,heating time,and copper content on the migration of copper from regreen Indocalamus leaves to food simulants.［Methods］ Regreen Indocalamus leaves were prepared by being soaked in copper sulfate pentahydrate solutions.Food simulants included ultrapure water,2.5% (mass fraction ) sodium chloride solution,4% (volume fraction ) acetic acid solution,10% (mass fraction ) white sugar solution,soybean oil,and 5‰ (mass fraction ) sodium bicarbonate solution.The effects of migration temperature,heating time,and copper content on the migration amount of copper from regreen Indocalamus leaves were analyzed.［Results］］ Except for soybean oil,the migration amount of copper from regreen Indocalamus leaves was the largest …

Design Of Cam-Linkage Combined Mechanism Based On Fourier Series, Tan Rongdeng, Yang Hongfei, Li Wenyuan, He Bing, Sha Yulong, Zhang Zijun, Peng Zijie

Food and Machinery

［Objective］ To enhance the motion smoothness and reliability of cam -linkage combined mechanisms under high -speed operating conditions and to investigate a cam profile design method based on Fourier series.［Methods］ This study derives the motion law expression of a cam -linkage combined mechanism through the Fourier series expansion theory and analyzes the influence of initial parameters on motion characteristics.Taking the lifting mechanism of packaging machinery as an example,the study employs MATLAB for cam profile curve design based on Fourier series and validates the basic dimensions and motion and dynamic performance of the cam.［Results］］ When the Fourier series expansion order k …

Effects Of Drying Methods On Functional Components And Properties Of Tainong Mango Powder, Hu Fangyang, Liu Caihua, He Lingling, Pei Yanhui, Zhang Dexiang, Zhu Zhengjie

Food and Machinery

［Objective］ To explore the effects of different drying methods on the functional properties of mango powder.［Methods］ Mango peel,mango sarcocarp,and mango pit powder are prepared by hot air drying,vacuum drying,and far infrared drying,and their particle morphology,content of functional components,and functional properties are determined.［Results］］ The content of functional components such as dietary fiber,flavonoids,and total phenols in mango peel and mango pit are higher than that in mango sarcocarp,which is more than 4 times higher than that in mango sarcocarp.There is no significant difference among the three drying methods for the same part.Mango powder has good water holding capacity (2.43~4.24 g/g) and oil …

Gardner’S View Of Intelligence, Seth C. Courrege, Nathan C. Weed

Essays in Developmental Psychology

Howard E. Gardner’s framework for understanding intelligence is one of the most well-known alternatives to the more widely-accepted Cattell-Horn-Carrol model of intelligence (CHC). In 1983, Gardner published Frames of Mind: The Theory of Multiple Intelligences, in which he rejected the idea of a single intelligence (g) in favor of multiple, relatively independent intelligences. In his introduction for the third edition of Frames of Mind, Gardner describes a myriad of inspirations for his theory, including a notable lack of research on artistic talents within cognitive psychology. Gardner argues that the traditional definition of “intelligence” is too narrow, and that some of …

Fictional Failures And Real-World Lessons: Ethical Speculation Through Design Fiction On Emotional Support Conversational Ai, Fayle Kollig, Jessica Pater, Fayika Farhat Nova, Casey Fiesler

Health Services and Informatics Research

Conversational artificial intelligence (CAI), which replicates human-to-human interaction as human-to-machine, is increasingly developed to address insufficient access to healthcare. In this paper, we use design fiction methods to speculate on ethical consequences of CAI that offers emotional support to complement or replace mental healthcare. Through a near-future news article about a fictional, failed CAI, we explore safety and privacy concerns associated with mismatches between what an emotional support CAI is advertised to do, what it technically can do, and how it is likely to be used. We pose the following questions to researchers, regulators, and developers: How might we jointly …

The Analysis Of Reference Standard Storage Failures Through The Use Of Ibuprofen, Hope Vonder Brink

Honors Projects

Reference standards are commonly used in drug chemistry. They are used to calibrate the instruments and serve as a known point of reference for analysts’ ability to compare unknowns. Drugs can degrade over time or through environmental factors, causing contaminants to be present. In the event of environmental degradation while in storage, such as the exposure to high heat, it would be beneficial to have a database of known breakdown products in common drug reference standards for analysts’ reference. Using ibuprofen as an exemplar drug, this study attempted to identify the thermal breakdown products of ibuprofen and introduce the proposed …

Real-World Applications: Strategies To Inspire Students To Learn Calculus And Differential Equations Through Modeling, Aleksei Talonov

UNLV Best Teaching Practices Expo

Key elements of strategy to inspire students include:

• Pre-Class Preparation;
• Historical Context (Starting each lecture with a brief historical overview to provide relevance and context to the material);
• Interactive Real-Life Problem Solving (Discussing the main concepts of the lecture and collaboratively solving challenging problems);
• Proof Techniques (Demonstrating mathematical methods used to prove key statements from the current lesson);
• Real-Time Feedback.

Adopted Children, Michael Galobardi, Lisa K. Lashley, Charles J. Golden

Essays in Developmental Psychology

Views about the manner and nature of human development have changed across time (Psyking.net 2016). Some of these views have been religious (e.g., creationism) and some of these views have been more biological (e.g., preformationism).  Regardless of the focus of the view, how we believe human beings develop has a profound effect on our expectations for those beings.  One early view of human development from a biological perspective was Preformationism.  This is explained as, “A notion that was widespread among pioneer biologists in the 18th century was that the fetus, and hence the adult organism that develops from it, is …

Designing A First-Year Seminar For First-Generation Students At Gvsu, Ethan M. Demarest

Masters Projects

First-generation college students often face distinct academic, social, and institutional challenges that can affect their retention and overall success in higher education. While first-year seminars (FYS) are commonly used to support new students, research shows that they are most effective when intentionally designed to address the needs of first-generation learners. This project proposes a one-credit, eight-week first-year seminar titled First & Proud: Navigating College as a First-Gen Student, to be implemented at Grand Valley State University. Grounded in literature on high-impact practices, identity development, and first-generation student success, the course is structured to promote reflection, skill-building, and connection to …

Identification Of Areas Of Weakness In Forensic Footwear Research, Kathryn Roy

Honors Projects

Forensic footwear examinations have been carried out for almost a century, but the foundational validity of identifying a questioned impression to a particular shoe has been questioned by the National Research Council and the President’s Council of Advisors on Science and Technology. The focus of this paper was to identify the current weaknesses present in forensic footwear impression research. Additionally, a future experiment was proposed to address these concerns and improve the foundational validity of footwear impression comparisons. A total of 15 footwear research studies varying in methodology and content were analyzed and contrasted. From this, a lack of studies …

Social Construction Of Technology In Vr Adoption For Science Education, Adipurwa Muslich

JURNAL KOMUNIKASI INDONESIA

VR has emerged as a promising tool for revolutionizing science education, offering immersive and interactive experiences that can enhance student understanding. It holds significant potential as a communication medium for explaining the complexities of science in classroom settings. Despite its potential, VR’s penetration in science education remains limited. This research explored the facets influencing VR adoption in education, focusing on science teachers' perspectives in Jakarta. Using a qualitative approach, the study investigates how the SCOT concept, grounded in communication theory, affects the adoption of VR in the educational sector. Key themes identified included the role of networking, school culture, socioeconomic …

An Interdisciplinary Approach To The Investigation Of Consciousness, James Guy Lundie

Electronic Theses and Dissertations

Questions of phenomenal consciousness have troubled intellectuals for millennia. Theologians, philosophers, and scientists continue to grapple with the problem of how our minds interact with our brains and bodies. From Anaxagoras and Aristotle, Augustine and Aquinas, Nagel and Goff, and Koch and Hameroff, the brightest among us have been unable to solve the riddle of how we are conscious, unique, self-aware thinking beings. Uniting our efforts by considering the reasoning of interdisciplinary scholars and integrating the thoughts of others with our own can only enhance our chances of success. This paper offers a pathway toward a multidisciplinary theory of consciousness …

Bridging The Language Proficiency Gap: Seeking Strategies For High Language Proficiency, Maria Isabelle Lyon

Theses and Dissertations

This study explores factors contributing to high proficiency in German speakers, focusing on university graduates who achieved Advanced High or Superior ratings on the ACTFL Oral Proficiency Interview (OPI) at the end of their university studies. The nine participants, all of whom had significant exposure to German during and/or before their undergraduate studies at Brigham Young University (BYU), shared insights into their language learning experiences. The study uses interviews and surveys to examine key characteristics, strategies, and experiences that influenced participant proficiency. The findings highlight motivation, consistency, and humility as key factors contributing to learners. Participants emphasize intrinsic motivation, consistent …