Digital Commons Network^™

Preparation And Performance Of Emulsified Asphalt With High-Temperature Resistant And Wheel Sticking-Free Effects, Yan Han, Zha Xudong, Kang Xiaogang, Gong Yan, Zhang Zhengji, Zhang Wenshuai

Journal of China & Foreign Highway

To address the problem of wheel sticking at high temperatures in the construction process of existing wheel sticking-free emulsified asphalt of tack coat,this paper adopted the composite modification method of 70# and 15# matrix asphalt and waterborne polyurethane resin (WPR ) to prepare hard asphalt-WPR (HA-WPR )-modified emulsified asphalt in accordance with the high-temperature resistant and wheel sticking-free requirements.Through a series of laboratory tests,the technical performance,wheel sticking-free performance,and interlayer bonding performance of the emulsified asphalt were researched and compared with ordinary wheel sticking-free emulsified asphalt and ordinary emulsified asphalt tack coat oil.The results show that the technical performance of the …

Model Analysis Of Axial Compressive Mechanical Properties Of Concrete Column Constrained By Textile-Reinforced Engineered Cementitious Composites, Ma Gao, Wang Zhaoyang

Journal of China & Foreign Highway

In order to avoid the problem of matrix cracking in textile-reinforced concrete (TRC ),a reinforcement method of textile-reinforced engineered cementitious composites (ECC ),namely TRECC composed of textile and high-performance ECC was proposed.However,the research on the axial compressive mechanical properties of TRECC-constrained concrete in China and abroad is still insufficient,and there is a lack of reliable strength and ultimate strain analysis models.A total of 116 axial compression test results of TRC-constrained concrete columns and 125 axial compression test results of TRECC-constrained concrete columns were collected.The confinement mechanisms and failure modes of TRECC and TRC-constrained concrete were compared.Then,the strength models and ultimate …

Key Techniques For Constructing Flexible Geosynthetic Reinforced Soil Abutments, Yu Xiaoxiao, Xu Chao, Li Haoyu, Zuo Binli

Journal of China & Foreign Highway

The flexible geosynthetic reinforced soil (GRS ) abutments offer several advantages,including cost saving,reduced bridgehead misalignment,and good seismic performance,showing great potential for application in transportation engineering both in China and abroad.The flexible GRS abutment is essentially composed of a composite structure formed by closely spaced layers of geosynthetic reinforcement material,and the construction quality and load-bearing capacity are crucial to the success of the project.To ensure construction quality and study the construction process of flexible GRS abutments,a construction site monitoring method was adopted.Based on the experience from the construction of a vehicular overpass on the Wuwei ‒ Yuexi Expressway,the quality control measures …

Research On Mechanical Entry Excavation And Reinforcement Measures For Large Cross-Section Tunnel, Liang Xiao, Li Ke, Guo Hongyan, Hu Xuebing, Yao Chengrui

Journal of China & Foreign Highway

With the innovation of tunnel construction techniques and mechanical equipment,mechanical drilling and blasting for mountain tunnels have gradually developed.However,several challenges exist during the mechanical entry excavation for mountain tunnels,including the significant influence of geological factors,limited equipment adaptability,and constrained working space.This research,based on a specific tunnel project,utilized FLAC3D finite difference software to study the mechanical excavation method and auxiliary reinforcement measures for shallow-buried segments at the large cross-section tunnel portal.A comparative analysis was conducted on the displacement of surrounding rock,the stress of supporting structures,and the variation of plastic zones before and after tunnel face reinforcement for different advances per cycle and …

Application Research Of Bim Technology In Highway Prefabricated Bridge Scheme Design, Li Jinlong, Wang Xinnan, Liu Dongsheng, Chen Zhongzhi

Journal of China & Foreign Highway

At present,the highway bridge scheme requires continuous adjustments and upgrading due to iterative updates of design data and refined investigation of the surrounding environment of the bridge site.This paper upgraded the traditional route design software,developed a GIS-integrated platform,built a three-dimensional environment with design data as the core,and created a bridge scheme model through parametric intelligent design.It also evaluated and optimized the bridge scheme based on the integration of the bridge model and the surrounding environment.The results show that by using BIM technology,the forward design of a bridge scheme based on a three-dimensional environment is realized.This approach automates the scale statistics …

Urbanization Impacts Dissolved Organic Matter Concentration And Quality In A Southeastern United States Watershed, Gwendolyn M. Hopper, Erik M. Smith, Jade Dormoy-Boulanger, Claudia R. Benitez-Nelson

Faculty Publications

Blackwater rivers are named due to their exceptionally high concentrations of chromophoric dissolved organic matter (CDOM). They are the predominant lotic ecosystem in the United States Southeastern Coastal Plain, a region experiencing some of the nation’s highest rates of development. This study assessed variability in DOM concentration and composition across forested to urbanized blackwater systems in coastal South Carolina, U.S. Dissolved organic carbon and nutrient concentrations as well as absorbance and fluorescence optical properties reveal that urban sites have lower concentrations, elemental ratios, and less complex DOM. In contrast, forested blackwater sites have concentrations an order of magnitude higher, elevated …

Investigating Environmental Controls On Temperature Dynamics In An Urban Stream, Matthew Cullen Yates

Dissertations and Theses

Water temperature is a critical environmental variable influencing aquatic ecosystems. This study investigated the factors controlling stream temperature and thermal stratification in Rock Creek (RC) and Bethany Lake, an urbanized watershed featuring an in-line irrigation pond and buried wastewater infrastructure. Previous research suggested that subsurface water flow might drive temperature shifts in Rock Creek during summer periods when flow from Bethany Lake ceases. From 2023 to 2024, continuous temperature and stage monitoring, combined with statistical methods including principal component analysis and random forest regression, were used to evaluate seasonal temperature dynamics and their controlling factors. Results confirmed that seasonal reversals …

Exploring Service Quality In Gambian Public Universities In The Dawn Of Massification: Perceptions Of Internal Authorities, Yankuba Yabou, Precious Nyoni

Higher Learning Research Communications

Objective: The purpose of our study was to explore the perceptions of internal authorities of public universities in The Gambia—with a focus on the University of The Gambia (UTG)—on service quality amid massification and thereby elicit their recommendations.

Method: This qualitative case study of service quality in public universities in the Gambia employed content analysis of data collected through semi-structured interviews to ascertain categories.

Results: The results showed an unfavorable view of the quality of all the factors observed—physical environment quality, core educational quality, and transformative quality. Despite efforts of the university administration to enhance the quality of education, the …

Utilizing Convolutional Autoencoders For Anomaly Detection And Drill Bit Damage Assessment In Rotary Percussion Drilling, Lesego Senjoba, Hajime Ikeda, Hisatoshi Toriya, Tsuyoshi Adachi, Youhei Kawamura

Journal of Sustainable Mining

Monitoring drill bit wear during drilling improves operational efficiency. Wear in drill bits is influenced by factors related to drilling parameters and rock properties and can be categorized into types based on the cause of failure. Several studies have used machine learning to detect drill bit wear, mainly using classification models. However, these models require an extensive amount of data that includes different possible drill bit failures. This presents a challenge as acquiring data is difficult due to the scarcity of anomalies. This study introduces a novel approach utilizing convolutional autoencoders (CAE) for both anomaly detection and drill bit damage …

Nature Journaling: A Tool For Designing A Responsive Science Methods Course For Adult Learners, Meenakshi Sharma, Divya Gangadin, Francy Gomez

Journal of Educational Research and Practice

We examined an outdoor, experiential learning approach within a science methods course for nontraditional adult learners who are often career changers or individuals transitioning into teaching later in life. Through immersive, nature-based experiences, the course connected adult learners to science via direct engagement with the natural world. We include reflections from two nontraditional learners who participated in a 6-week nature journaling process, showcasing how they embraced inquiry-based experiences in natural settings. These reflections reveal a supportive learning environment that values diverse learning styles and life experiences and encourages exploration. Insights from these experiences can guide science teacher educators in developing …

The Shadow Side Of Social Gift-Giving: Miscommunication And Failed Gifts, Sunwolf

Communication Research Trends

No abstract provided.

Mobile Technology-Based Library Services In Academic Libraries Of Ghana, Silas Adjei, Patience Adetsi, Isaac Kojo Agyeman

Library Philosophy and Practice (e-journal)

In contemporary academic library settings, there's a growing need for libraries to offer access to their resources and services remotely and without boundaries. Mobile technologies (MT) have gained widespread acceptance among academic library stakeholders globally, as they are seen as effective communication tools for providing convenient library services to patrons. This study aimed to explore the potential benefits of adopting and implementing Mobile Technology-based Library Services in academic libraries in Ghana. Conducted as a descriptive survey using a quantitative approach, the research focused on two private universities in Ghana: Valley View University and Central University. The sample comprised 390 undergraduate …

Chlorophyll Concentration And Its Impact On Electrospun Acrylic Nanofibers, Zainab Jassim, Mohammed Akraa

Baghdad Science Journal

This study explores the properties of electrospun nanofibers of polymethyl methacrylate (PMMA) blended with chlorophyll, which have potential applications in photovoltaic manufacturing. Different chlorophyll concentrations (0, 0.05, 0.1, 0.15, 0.2, and 0.25 wt.%) were added to the electrospinning solutions of PMMA and acetone. After the electrospinning procedure and the evaporation of acetone, the fibers contained the chlorophyll concentrations of (0, 0.31, 0.63, 0.94, 1.25, and 1.56 wt.%). Rheology, Fourier Transformation Infrared Radiation, scanning electron microscopy, and UV-vis spectroscopy characterized the resulting fibers. The results revealed that chlorophyll increased the solution's viscosity and decreased the nanofibers' diameter up to 0.8 wt.%. …

Building Cartographic Models To Evaluate The Water Quality Of The Euphrates River Stream Extending Between The Al-Shinafiya And Al-Nasiriyah Cities In Southern Iraq Relying On Gis Technology And Water Quality Indices, Heba Sahib Dakheel, Raheem Hameed Al-Abdan

Baghdad Science Journal

The current study aimed to evaluate the water quality of the Euphrates River in the area extending from Al-Shinafiyah to Al-Nasiriyah by studying the qualitative characteristics of the river and knowing the quality of its water, and that’s using the model Canadian(CCME WQI) and Weighted Arithmetic Index, the origin of the water is then classified according to the Piper and Schuler- Solen methods, and it turns out that all elements of the physical and chemical properties are high. As for the Canadian model, the index values range between (62.2–74.7), the highest value recorded for site (4), which is It is …

2025 February 21 - Academic, Research, And Student Success Committee Agenda And Minutes, Board Of Trustees, East Tennessee State University

Board of Trustees Agendas and Minutes

No abstract provided.

Agenda (2-21-2025), Associated Students, Incorporated

Associated Students, Incorporated records

No abstract provided.

Vertical Structure Of Subsurface Marine Heatwaves In A Shallow Nearshore Upwelling System, Gavin Plume, Ryan K. Walter, Isabelle Cobb, Michael Dalsin, Piero L. F. Mazzini, Nathan P. Shunk, Ian C. Robbins, Thomas P. Connolly

Physics

Marine heatwaves (MHWs) are increasing in frequency and intensity globally and are among the greatest threats to marine ecosystems. However, limited studies have characterized subsurface MHWs, particularly in shallow waters. We utilized nearly two decades of full water-column (~ 10 m) observations from a unique automated profiler in central California to characterize, for the first time, the vertical structure of MHWs in a shallow nearshore upwelling system. We found MHWs have similar average durations and intensities across all depths, but there were ~ 17% more bottom MHW days than surface MHW days. Nearly one third of bottom MHWs occurred independently …

The Authority Of Clothes: Queen Elizabeth I And Her Succession Crisis Of 1562/63, Kalen R. Melton

Department of History: Dissertations, Theses, and Student Research

This thesis looks at the silent messaging associated with Queen Elizabeth I's clothing during her early reign. The goal of this thesis is to look at outfits Elizabeth could have worn and see what sort of messages her contemporaries in Parliament might haven taken from them. I specifically looked at Elizabeth's Parliamentary meeting from 1562/63. I did so because this meeting was early in her reign, her legitimacy was being questioned on two fronts, and she had just gotten over smallpox. Elizabeth was not known yet for her extravagant outfits, but she would have needed to have had a powerful …

Research Finds Women In It Embrace Competition, Defying Stereotypes, Aaron Sanborn

UNH Today Archive

No abstract provided.

Molecular Mechanisms Of Niemann-Pick Type C: Investigating Gene Expression, Lipid Metabolism, And Mitochondrial Dysfunction In Fibroblasts, Sarah Kim

Theses and Dissertations

Niemann-Pick Disease Type C (NPC) is a progressive lysosomal storage disorder characterized by the accumulation of lipids, particularly cholesterol, within cells, leading to severe neurological manifestations and developmental issues. This study employs RNA-seq to compare gene expression profiles between fibroblasts derived from a healthy individual and a patient with the NPC1 mutation. A total of 12,978 genes were analyzed, revealing 191 differentially expressed genes. Functional enrichment analysis disclosed significant associations with biological processes related to development, lipid metabolism, embryonic organ development, vascularization, and neuroinflammation. Additionally, the connection between mitochondrial function and lysosomal impairment was explored, revealing that NPC1 mutant fibroblasts …

Solid State Transformer Controls For Mitigation Of E3a High-Altitude Electromagnetic Pulse Insults, Connor A. Lehman, Rush D. Robinett, Wayne Weaver, David G. Wilson

Michigan Tech Publications

This paper explores the use of a solid state transformer (SST) to mitigate the 𝐸3𝐴 component of a high-altitude electromagnetic pulse (HEMP) insult using external energy storage optimal control techniques. In lieu of conventional passive blocking devices or feedback-controlled energy storage devices, a novel implementation of Hamiltonian error tracking is utilized to develop a feedback control law for the variable converter ratio in an SST. The findings of the simulations performed in this paper suggest that additional energy storage is not necessary to protect an individual load from a HEMP insult. The simulations performed examine the response of a single-phase …

Sobolev Regularity For The Bergman Projection On Relatively Compact Domains In Hermitian Manifolds, Philip Harrington

Mathematical Sciences Faculty Publications and Presentations

Generalizing a result of Berndtsson and Charpentier, we provide sufficient conditions for L2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$L< ^>2$$\end{document} Sobolev regularity of the Bergman projection acting on L2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$L< ^>2$$\end{document} sections of a holomorphic line bundle restricted to a relatively compact domain with Lipschitz boundary in a Hermitian manifold. We provide examples to show that our methods work for domains in Hopf manifolds endowed with a suitable Hermitian metric.

Utilizing Ai For Improved Credit Risk Assessment, Emel Baglarbasi

Harrisburg University Dissertations and Theses

As the finance sector continues to evolve, traditional risk assessment methods struggle to calculate default risk and identify nonlinear relationships accurately. This research examines an alternative risk assessment model designed to estimate credit risk more accurately and efficiently in the credit processes of individual customers, which are one of the primary sources of income for the banking sector. It presents the theoretical design of an AI-based model. The use of this AI model can reduce human error in processes, improve risk assessment accuracy, and expedite procedures. The study adopts a postpositivist worldview and employs a quantitative research design. Algorithms including …

Re: Comment Letter For The Draft Final Silver Bow Creek Conservation Area Repository Data Gap Data Summary Report (Dated January 3, 2025), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Silver Bow Creek Butte Area Npl Site Fall Semi-Annual 2024 Butte Priority Soils Operable Unit Interim Site-Wide Groundwater Monitoring Data Report. Consent Decree- Civil Action No. Cv 89-039-Bu-She, Josh Bryson

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Silver Bow Creek Butte Area Npl Site Fall Semi-Annual 2024 Butte Priority Soils Operable Unit Interim Site-Wide Groundwater Monitoring Data Report. Consent Decree- Civil Action No. Cv 89-039-Bu-She, Josh Bryson

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Comment Letter For Butte Priority Soils Operable Unit Subdrain Pump Station 30% Remedial Design Package Submittal (Dated January 31, 2025), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Fort Hays State University Tiger Weekly, February 21, 2025, University Relations

Tiger Weekly Newsletters

No abstract provided.

Multiphase Modelling Of Electrical Conductivity Of Concrete With Conductive Inclusions, Zaiwei Li, Feiyu Shi, Long Yuan Li

School of Engineering, Computing and Mathematics

Electrical conductivity (EC) of concrete can be effectively improved by incorporating conductive materials such as carbon nanotubes in the mix design. However, mechanism for the EC enhancement to which the addition of conductive materials contributes has not yet been well understood. Besides, either sand or coarse aggregate in concrete also affects the EC of concrete, which complicates understanding of the mechanism. This paper presents a multiphase analytical model to investigate the effect of constituents on the effective EC of concrete. This multi-phase model was developed based on Maxwell model which was modified in this research to consider the effects of …

Building Education System Resilience In Samoa: Exploring Systems, Policies And Classroom Practices, Yung Nietschke, Anna Dabrowski, Nora Warren, Michelle Arasi-Mulitalo

International Education Research

This report presents the findings of research on education system resilience in Samoa during and immediately following the COVID-19 pandemic in order to build a deeper understanding of policies and practices in place, and what lessons can be drawn to support system-wide adjustments to mitigate future school disruptions. Data included case studies of practice, student assessment data and secondary data analysis of the 2018-2021 PILNA surveys for Samoa. The study identified the policies and practices that contribute to the Samoan education system's capacity to respond and recover from crisis and the factors that can drive system resilience, including social, human …