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Articles 3301 - 3330 of 27207
Full-Text Articles in Entire DC Network
The Role Of Social Media Influencer In Bringing Economic Content Closer To Moroccan Youth -Youtube As An Example-, Mohammed Omar Zouhri
The Role Of Social Media Influencer In Bringing Economic Content Closer To Moroccan Youth -Youtube As An Example-, Mohammed Omar Zouhri
This study aims to monitor the effects of economic content published through the digital space in enhancing economic awareness among young people in Morocco, and empowering them with relevant knowledge and information in an attractive and simplified manner. The study begins by showing the extent to which young people, especially university students, interact with economic content through what social media influencers present on their YouTube channels. The study examines the nature of this content, its importance in bringing economic information closer to the public, and the extent of its ability to help a group of students improve their levels and …
Academic Senate - Minutes, 10/29/2024, Academic Senate
Academic Senate - Minutes, 10/29/2024, Academic Senate
Academic Senate Minutes
No abstract provided.
Bridging The Protection Gap: Innovative Approaches To Shield Older Adults From Ai-Enhanced Scams, Ld Herrera, London Van Sickle, Ashley L. Podhradsky
Bridging The Protection Gap: Innovative Approaches To Shield Older Adults From Ai-Enhanced Scams, Ld Herrera, London Van Sickle, Ashley L. Podhradsky
Research & Publications
Artificial Intelligence (AI) is rapidly gaining popularity as individuals, groups, and organizations discover and apply its expanding capabilities. Generative AI creates or alters various content types including text, image, audio, and video that are realistic and challenging to identify as AI-generated constructs. However, guardrails preventing malicious use of AI are easily bypassed. Numerous indications suggest that scammers are already using AI to enhance already successful scams, improving scam effectiveness, speed and credibility, while reducing detectability of scams that target older adults, who are known to be slow to adopt new technologies. Through hypothetical cases analysis of two leading scams, the …
Wics Conference 2024: Creating Connections Together: Agenda And Abstracts, Daren D. Redfearn, Christopher A. Proctor
Wics Conference 2024: Creating Connections Together: Agenda And Abstracts, Daren D. Redfearn, Christopher A. Proctor
Water and Integrated Cropping Systems Conferences
WICS Conference 2024: Creating Connections Together
Agenda and Abstracts
Water Security (Quantity/Quality)
Nebraska Groundwater Quality Clearinghouse; Augustine Adjei, Martha Rhoades, and Kent Eskridge
Assessing the AquaCrop model’s accuracy for soybean under variable irrigation; Anmol Singh
Yield response of irrigated maize hybrids to water availability; Thais Murias Jardi, Saleh Taghvaeian, Chris Proctor, Daran Rudnick, and Chuck Burr
Using the DSSAT CERES-Maize model to evaluate farmers' irrigation decisions; Rintu Sen
Nutrient Management and Cycling
Effect of cover crop mixtures and crop rotation on nitrogen dynamics and crop yield in southeast Nebraska; Madhusudhan Adhikaari
Nitrogen inhibitors reduce nitrogen losses via ammonia volatilization, nitrous …
Pisa 2022. Assessing Creative Thinking For A Better Future, Lisa De Bortoli, Catherine Underwood
Pisa 2022. Assessing Creative Thinking For A Better Future, Lisa De Bortoli, Catherine Underwood
OECD Programme for International Student Assessment (PISA) Australia
Creative thinking was assessed as an innovative domain for the first time in PISA 2022. This report presents the creative thinking results for Australia as a whole, for the Australian states and territories and for the other groups in PISA 2022. It is one of two thematic reports providing additional high-level analysis of Australia's 2022 PISA performance. Differences in results are only reported if tests of statistical significance showed that these were likely to be real differences; that is, differences were unlikely to be caused by chance.
Enhancing Soil Texture And Bulk Density Mapping Using Soil Grids And Machine Learning: A Comparative Analysis With Observed Data, Aram Ali, Ismael O. Ismael, Hewa T. Mustafa, Diman Krwanji, Akram O. Esmail
Enhancing Soil Texture And Bulk Density Mapping Using Soil Grids And Machine Learning: A Comparative Analysis With Observed Data, Aram Ali, Ismael O. Ismael, Hewa T. Mustafa, Diman Krwanji, Akram O. Esmail
Research outputs 2022 to 2026
Digital soil mapping plays a crucial role in understanding soil variability and informing sustainable land management practices. This study focuses on the Kurdistan Region of Iraq (KRI), evaluating the accuracy of SoilGrids, a global-scale soil mapping initiative, and exploring the efficacy of machine learning algorithms in refining soil properties estimations. The aim of this research was to assess and represent the physical parameters of soils effectively by comparing ground truth soil sampling data with data obtained from SoilGrids regarding clay, silt, and sand fractions and bulk density. Comparative analyses were conducted between ground truth soil sampling data and SoilGrids predictions, …
Transitioning Our Website To Libguides Cms, Samantha Duncan, Eric Resnis
Transitioning Our Website To Libguides Cms, Samantha Duncan, Eric Resnis
Library Faculty Presentations
In this presentation, we describe how we used data from rapid and in-depth student usability testing to assist with the redesign of the library’s website as we finally transitioned to LibGuides CMS. Using the Springy tools; LibGuides, LibGuides CMS, LibCal, and LibWizard we outlined how we were able to create and carry out this highly effective testing, resulting in a better understanding of how our students navigate our site and how to improve it. During this journey, attendees were provided with the detailed and some might say lengthy process that was undertaken to achieve our goals. We did this by …
Learning Peer Support Interactions Via Bi-Lstm Graph Neural Networks For Suicide Risk Prediction, Harikrishna Marampelly
Learning Peer Support Interactions Via Bi-Lstm Graph Neural Networks For Suicide Risk Prediction, Harikrishna Marampelly
USF Tampa Graduate Theses and Dissertations
Suicide prevention through early detection using social media data has been widely studied. However, the critical role of peer support interactions among individuals with similar mental disorders has not been deeply investigated or explored. In this study, we explore peer interactions in online communities for individuals with bipolar disorder and leverage this information to predict suicide risk levels. We propose a model that uses contextualized posts and comments along with their sentiment features. By embedding these features into a peer support network, our model captures peer interactions and predicts suicide risk levels using the bidirectional LSTM Graph Neural Networks (Bi-LSTM …
Minutes, Curriculum Committee Meeting, Tuesday, October 29, 2024, Curriculum Committee
Minutes, Curriculum Committee Meeting, Tuesday, October 29, 2024, Curriculum Committee
Curriculum Committee Minutes
No abstract provided.
Evaluation And Lessons Learned From The Dissemination And Implementation Science Scholars Program In The National Cancer Prevention And Control Research Network, Daniela B. Friedman, Cam Escoffery, Elaine H. Morrato, Cynthia A. Thomson, Courtney N. Petagna, Freda Allyson Hucek, Mary Wangen, Aubrey Villalobos, James R. Hébert Scd, Samuel Noblet, Mayank Sakhuja, David O. Garcia, Jennifer L. Cruz, Stephanie B. Wheeler
Evaluation And Lessons Learned From The Dissemination And Implementation Science Scholars Program In The National Cancer Prevention And Control Research Network, Daniela B. Friedman, Cam Escoffery, Elaine H. Morrato, Cynthia A. Thomson, Courtney N. Petagna, Freda Allyson Hucek, Mary Wangen, Aubrey Villalobos, James R. Hébert Scd, Samuel Noblet, Mayank Sakhuja, David O. Garcia, Jennifer L. Cruz, Stephanie B. Wheeler
Faculty Publications
Background:
The Centers for Disease Control and Prevention (CDC)-funded Cancer Prevention and Control Research Network (CPCRN) has been a leader in cancer-related dissemination & implementation (D&I) science. Given increased demand for D&I research, the CPCRN Scholars Program launched in 2021 to expand the number of practitioners, researchers, and trainees proficient in cancer D&I science methods. Methods:
The evaluation was informed by a logic model and data collected through electronic surveys. Through an application process (baseline survey), we assessed scholars’ competencies in D&I science domains/subdomains, collected demographic data, and asked scholars to share proposed project ideas. We distributed an exit survey …
Lived Experiences And Tuition Discounting Of Private Historically Black Colleges And Universities, Angelia Le Dawn Brooks
Lived Experiences And Tuition Discounting Of Private Historically Black Colleges And Universities, Angelia Le Dawn Brooks
Walden Dissertations and Doctoral Studies
There has been a decline in tuition revenue for some private historically Black colleges and universities (HBCUs); an above-average tuition discount rate may impede the financial performance of private HBCUs. The purpose of this qualitative phenomenological study was to explore the lived experiences of business officers and other employees of private HBCUs managing the tuition discount rate. The transcendental phenomenological framework guided the study. Individual semistructured interviews were conducted with seven participants who self-identified as managing the tuition discount rate of private HBCUs. Data were analyzed using Moustakas’s modified van Kaam method. Six themes emerged from the data analysis: (a) …
Vulnerability Discovery On Broadcom Devices With Qemu, Christian Shane Douglas Little
Vulnerability Discovery On Broadcom Devices With Qemu, Christian Shane Douglas Little
USF Tampa Graduate Theses and Dissertations
System-on-chip (SoC) devices in the form of routers, access points, and smart appliances have become an increasingly prevalent aspect of our infrastructure. Performing vulnerability research on these devices may be exceptionally difficult given the on-hardware limitations, inability to guarantee certain aspects of the system, and lack of information when the appliance’s source code is not available.In this thesis, we present Broadfeather, a QEMU-based emulation target, and framework for dynamic analysis and instrumentation. While Broadfeather supports data types shared across many chips under the Broadcom umbrella, it is primarily geared towards the BCM6755 Wi-Fi 6E capable chipset. Broadfeather also features the …
Successful Online Adult Learners’ Motivation For Persistence To Graduation, Yolanda Louie
Successful Online Adult Learners’ Motivation For Persistence To Graduation, Yolanda Louie
Walden Dissertations and Doctoral Studies
The problem that was addressed through this study is that online undergraduate adult students, 25 years of age or older, do not persist to graduation at Caring University, a pseudonym for an online university. The purpose of this qualitative study was to investigate the perceptions of online adult undergraduate alumni about what motivated them to persist in their educational pursuits and what recommendations they have for instructors to motivate current students. The conceptual framework that guided this research is Ryan and Deci’s self-determination theory, which explores why humans are motivated to change. For this basic qualitative design, 10 adult undergraduate …
Decentralized Voluntary Agreements Do Not Reduce Emissions In A Climate Change Experiment, Alessandro Del Ponte, Aidas Masiliūnas, Noah Lim
Decentralized Voluntary Agreements Do Not Reduce Emissions In A Climate Change Experiment, Alessandro Del Ponte, Aidas Masiliūnas, Noah Lim
Political Science Faculty Articles and Research
Can climate accords based on decentralized and voluntary agreements successfully reduce carbon emissions? We designed an economic experiment to study the effectiveness of the best-known mechanisms to foster international cooperation on climate change mitigation: climate pledges, financial penalties, and peer evaluation. We test each mechanism both separately and together. In the climate pledge treatments, participants could pledge their desired emissions target, approved by majority vote. In the treatments with financial penalties, failure to meet pledges triggered monetary sanctions. In the peer evaluation treatments, participants could evaluate each other, which determined who would receive an additional nonmonetary environmental prize. We find …
Exploring Pre-Service Teachers' Experiences With Emerging Technologies In Secondary Education: A Phenomenological Study, Richelle M. Decuir
Exploring Pre-Service Teachers' Experiences With Emerging Technologies In Secondary Education: A Phenomenological Study, Richelle M. Decuir
LSU Doctoral Dissertations
This research was an investigation of the role of emerging technologies in preparing pre-service teachers to engage with secondary learners effectively. A phenomenological approach was utilized to explore how instructional design models and constructivist learning theories shape technology training in two Southeastern public universities. The research was focused on pre-service teachers' experiences developing digital competencies, integrating instructional design, and utilizing emerging technologies in educational settings. Data was collected through semi-structured interviews and demographic surveys to understand the participants’ perspectives comprehensively. The study findings revealed that while pre-service teachers recognize the value of technology in enhancing student engagement and supporting personalized …
Enhancing Writing By Increasing Metacognitive Skills Through Socratic Seminars In A High Poverty Middle School Social Studies Classroom: An Intrinsic Case Study, Kirsten Hickingbottom
Enhancing Writing By Increasing Metacognitive Skills Through Socratic Seminars In A High Poverty Middle School Social Studies Classroom: An Intrinsic Case Study, Kirsten Hickingbottom
LSU Doctoral Dissertations
The purpose of this intrinsic case study was to better understand the role metacognitive skills play within classroom settings to increase students’ writing through Socratic Seminars. A predominant question guided this study: Can improving student metacognition through the repetitive use of questioning techniques in Socratic Seminars lead to improved writing skills? This question, along with four additional research questions guided the research. There is a need for more activities that promote metacognition due to its correlation with academic achievement, critical thinking skills, problem-solving abilities, and perceived self-efficacy (Keus, 2020). The significance of this study was to examine a method of …
Coadministration Of Ketamine And Magnesium: An Integrative Review, Lauren Chiavetta
Coadministration Of Ketamine And Magnesium: An Integrative Review, Lauren Chiavetta
Group: Bryan College of Health Sciences Doctor of Nurse Anesthesia Practice (DNAP) Collection
Objective: The object of this integrative review was to investigate the analgesic benefit and side effect profile of the coadministration of ketamine and magnesium. Secondary goals were to provide an evidence-based recommendation on the ideal dosing, frequency, and order of administration of the medications. Methods: Relevant articles published between January 2001 and May 2019 were examined for quality, strength, and generalizability. Results: Beginning evidence suggests ketamine may interact with magnesium to provide synergistic NMDA receptor antagonism and analgesia. Evidence from animal studies proposes that order of administration may influence potency, with ketamine prior to magnesium producing better analgesia. Coadministration of …
Incorporating Ecosystem Information Into The Federal Fisheries Management Process, Adelle Molina
Incorporating Ecosystem Information Into The Federal Fisheries Management Process, Adelle Molina
Sustainability Seminar Series
The goal of fisheries management is to maintain sustainable fisheries and preserve their value. Fisheries management councils set fishing rules and regulations based on scientific advice in the form of a stock assessment. Stock assessments collect and analyze data, produce reports on the condition or status of an exploited stock, and estimate sustainable yield. Stock assessment scientists use analytical approaches and quantitative methods to develop stock assessment models that describe the population dynamics of a stock. Traditionally, stock assessments have not accounted for either ecological interactions, such as predation, or the environment. In this presentation, I will briefly describe the …
Photoluminescence Intensity Enhancement And Stability In Cdte/Sio2 Quantum Dots Through Water Molecule Adsorption And Trap Passivation, Daniil S. Daibagya, Ivan A. Zakharchuk, Sergei A. Ambrozevich, Mikhail S. Smirnov, Anna V. Osadchenko, Oleg V. Ovchinnikov, Alexandr S. Selyukov
Photoluminescence Intensity Enhancement And Stability In Cdte/Sio2 Quantum Dots Through Water Molecule Adsorption And Trap Passivation, Daniil S. Daibagya, Ivan A. Zakharchuk, Sergei A. Ambrozevich, Mikhail S. Smirnov, Anna V. Osadchenko, Oleg V. Ovchinnikov, Alexandr S. Selyukov
Karbala International Journal of Modern Science
The study of the luminescence photostability for colloidal nanocrystals is an important task since the understanding of the corresponding physical processes advances new electronic devices based on semiconductor nanoparticles as well as other important applications such as biomarkers. In this paper, we provide the first study and comprehensive analysis of the photostability of the luminescent properties for colloidal CdTe/SiO2 core/shell quantum dots prepared by an aqueous-based method. The quantum dots were exposed to continuous laser radiation during two time intervals with prolonged break in between. The photoluminescence intensity of the quantum dots increased over time under continuous laser irradiation. …
Removal Of Selenium Ions From Contaminated Aqueous Solutions By Adsorption Using Lemon Peels As A Non-Conventional Medium, Alanood A. Alsarayreh, Suha Anwer Ibrahim, Salem Jawad Alhamd, Thekra Atta Ibrahim, Mohammed Nsaif Abbas
Removal Of Selenium Ions From Contaminated Aqueous Solutions By Adsorption Using Lemon Peels As A Non-Conventional Medium, Alanood A. Alsarayreh, Suha Anwer Ibrahim, Salem Jawad Alhamd, Thekra Atta Ibrahim, Mohammed Nsaif Abbas
Karbala International Journal of Modern Science
The disposal of heavy metals from various activities has become a pervasive issue. The investigation of sustain-able, low-cost adsorbents for the remediation of these hazardous pollutants has been widely disregarded. This research emphasizes the recovery of selenium ions from contaminated water using lemon peels as a cost-effective adsorbent. The adsorption was explored in a batch unit under various operational parameters, including initial selenium concentration (1-90 ppm), pH (1-11), agitation speed (100-500 rpm), adsorbent dose (0.4-5.5 g), contact time (5-180 minutes), and temperature (25-55 °C). The BET surface area of the lemon peels was found to be 27.86 m²/g before adsorption …
University Of Northern Iowa Faculty Senate Meeting Minutes, October 28, 2024, University Of Northern Iowa. Faculty Senate.
University Of Northern Iowa Faculty Senate Meeting Minutes, October 28, 2024, University Of Northern Iowa. Faculty Senate.
Documents - Faculty Senate
Meeting minutes from the Faculty Senate of the University of Northern Iowa.
Silver Bow Creek/Butte Area Npl Site Butte Priority Soils Operable Unit, Remedial Design Documents For The Blacktail Creek Area Groundwater Hydraulic Control System, Josh Bryson
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Principals’ Perspectives Of Their Role In The Success Of Positive Behavior Interventions Program In Secondary Schools, Andrea Felicia Bishop-Knight
Principals’ Perspectives Of Their Role In The Success Of Positive Behavior Interventions Program In Secondary Schools, Andrea Felicia Bishop-Knight
Walden Dissertations and Doctoral Studies
In Barbados, there has been an increase in violence and disruptive behavior among students at urban secondary schools. The problem is that some Barbadian urban secondary principals struggle to implement the Schools’ Positive Behavior Management Program (SPBMP), while other principals successfully reduce disruptive behaviors. This basic qualitative study explored the perspectives of principals who have successfully implemented and sustained SPBMP at secondary schools in Barbados. The conceptual framework for this study was Bandura’s social cognitive theory. The research questions focused on Barbadian urban secondary principals’ perspectives on the strategies to implement SPBMP successfully and the challenges to effectively sustaining SPBMP …
The Projected Exposure And Response Of A Natural Barrier Island System To Climate-Driven Coastal Hazards, Jennifer A. Thomas, Patrick L. Barnard, Sam Vitousek, Li H. Erikson, Kai Parker, Kees Nederhoff, K. M. Befus, Manoochehr Shirzaei
The Projected Exposure And Response Of A Natural Barrier Island System To Climate-Driven Coastal Hazards, Jennifer A. Thomas, Patrick L. Barnard, Sam Vitousek, Li H. Erikson, Kai Parker, Kees Nederhoff, K. M. Befus, Manoochehr Shirzaei
Geosciences Faculty Publications and Presentations
Accelerating sea level rise (SLR) and changing storm patterns will increasingly expose barrier islands to coastal hazards, including flooding, erosion, and rising groundwater tables. We assess the exposure of Cape Lookout National Seashore, a barrier island system in North Carolina (USA), to projected SLR and storm hazards over the twenty-first century. We estimate that with 0.5 m of SLR, 47% of current subaerial barrier island area would be flooded daily, and the 1-year return period storm would flood 74%. For 20-year return period storms, over 85% is projected to be flooded for any SLR. The modelled groundwater table is already …
Progress And Prospects Of Road Engineering Disease Treatment Technology In Permafrost Regions, Gao Feng, Zeng Xianzhang, Zhong Wenhua, Huang Shengyong, Zhang Junhui
Progress And Prospects Of Road Engineering Disease Treatment Technology In Permafrost Regions, Gao Feng, Zeng Xianzhang, Zhong Wenhua, Huang Shengyong, Zhang Junhui
Journal of China & Foreign Highway
Freeze-thaw disasters are key issues affecting the service performance and operational safety of road projects in permafrost regions.Under the combined influence of warming and humidification of the permafrost environment and engineering thermal effects,the degradation of permafrost is accelerating,exacerbating the risk of road freeze-thaw diseases.Roads in these regions are more frequently maintained and repaired to ensure service performance,with a service life lower than designed.Therefore,deepening the understanding of the disaster mechanism of road geotechnical structures and strengthening the study on engineering disease treatment technology are of great significance in promoting the construction and maintenance of high-quality and high-grade highways in frozen regions.This …
Treatment Methods Of Unstable Expansive Soil Slope Excavation In Overlying Rock Layer In Alpine Region, Shi Xiaobo, Cui Guangyan, Mou Chao, Wen Ye, Xie Feng, Fu Xiaoyang
Treatment Methods Of Unstable Expansive Soil Slope Excavation In Overlying Rock Layer In Alpine Region, Shi Xiaobo, Cui Guangyan, Mou Chao, Wen Ye, Xie Feng, Fu Xiaoyang
Journal of China & Foreign Highway
To deeply study the treatment method for instability of highway cutting slope under the condition of expansive soil overlying rock layer in an alpine region,the comprehensive treatment method of unstable slope under this bad geology was put forward based on the unstable slope project of Zhangbei‒Shangyi Expressway.The governance protection structure consisted of a rigid protection system,drainage system,thermal insulation system,flexible protection system,and waterproof system.The rigid protection system was an anti-slide pile setting at the height of 1/3 of the first grade slope,of which parameters were calculated by cutting the slope of the rock layer in the unstable area to reduce the …
Review Of Snow And Ice Melting Techniques For Road And Bridge In Cold Regions, Tang Liyun, Shao Haitao, Tang Huaming, Qiu Peiyong, Du Xiaoqi, Zhang Lei, Peng Hui
Review Of Snow And Ice Melting Techniques For Road And Bridge In Cold Regions, Tang Liyun, Shao Haitao, Tang Huaming, Qiu Peiyong, Du Xiaoqi, Zhang Lei, Peng Hui
Journal of China & Foreign Highway
Snow and ice melting of road and bridge surfaces is crucial for traffic safety,but current research on snow and ice melting techniques mainly focuses on engineering effects and technical evaluation,without the analysis and elaboration from the perspective of their mechanisms.To this end,based on the different mechanisms,this study divided snow and ice melting techniques into three types and summarized them:passive deicing,active deicing,and energy utilization deicing.This study systematically evaluated the advantages and disadvantages of traditional deicing methods such as deicing agents and mechanical deicing,analyzed two active deicing techniques,namely inhibitive freezing pavement and phase change material pavement,discussed the environmental-friendly method for road deicing …
Properties And Application Of Cement Improved Loess Under Low Temperature Environment In Cold Region, Li Xiangyang
Properties And Application Of Cement Improved Loess Under Low Temperature Environment In Cold Region, Li Xiangyang
Journal of China & Foreign Highway
According to the cold climate and low annual average temperature in cold regions of China,the field curing conditions of cement improvement of collapsibility loess under low temperature,room temperature,and medium temperature were simulated at 5 ℃,10 ℃,20 ℃,and 30 ℃,respectively.Based on laboratory experiments,this study analyzed the effects of curing temperature,cement content,and curing age on RCBR,unconfined compressive strength,and dynamic resilience modulus of cement improved loess.The effects of cement content and curing temperature on freeze-thaw durability and erosion resistance of cement improved loess were studied by the freeze-thaw cycle test and dynamic water erosion test.Combined with the laboratory results,the 4% and 5% cement …
Effect Of Chloride Ions On Salt Expansion Of Salinized Subgrade Fill Soil In Cold Regions, Hu Wenzhu, Wang Zhaowei, Cao Yong, Zhang Jing, Bai Ruiqiang
Effect Of Chloride Ions On Salt Expansion Of Salinized Subgrade Fill Soil In Cold Regions, Hu Wenzhu, Wang Zhaowei, Cao Yong, Zhang Jing, Bai Ruiqiang
Journal of China & Foreign Highway
Salinized subgrade fill soil in cold regions typically comprises composite saline soil rich in sodium chloride and sodium sulfate.This study aimed to explore the mechanism of the effect of chloride ion content on salt expansion of the salinized subgrade in cold regions.Based on the calculation theory of the sodium chloride-sodium sulfate-water ternary system solution in the Pitzer ion model and combined with the FREZCHEM model,the study quantitatively analyzed the intrinsic connection between water activity,freezing factor,and supersaturation ratio with temperature and concentration ratio (η=mCl-/mSO2-4).It investigated the variation patterns of the freezing temperature and crystallization supersaturation ratio of composite saline soil with …
Model Test On Soil Deformation Mechanism And Damage Mode Caused By Mud Leakage From Drilled Piles In Karst Area, Jiang Mingying, Chen E ’Mei, Liu Yongcheng, Zhu Yadong, Jiang Wenkui, Xie Ruiting
Model Test On Soil Deformation Mechanism And Damage Mode Caused By Mud Leakage From Drilled Piles In Karst Area, Jiang Mingying, Chen E ’Mei, Liu Yongcheng, Zhu Yadong, Jiang Wenkui, Xie Ruiting
Journal of China & Foreign Highway
Pile holes are often drilled through cavities in karst areas,which induces mud leakage and causes hole wall instability,ground collapse,or equipment trapping and hinders smooth construction.It is important to know the collapse mechanism of boreholes due to mud leakage,so as to optimize and determine the construction process of pile holes.In this paper,indoor model tests were used to study the deformation mechanism and damage mode of soil caused by drilling through cavities and mud leakage in pile holes under the conditions of upper clay and lower sandy soil in the karst area,so as to provide an experimental basis for the decision of …