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Articles 61561 - 61590 of 302669
Full-Text Articles in Physical Sciences and Mathematics
Lie Groups And Euler-Bernoulli Beam Equation, Medeu Amangeldi
Lie Groups And Euler-Bernoulli Beam Equation, Medeu Amangeldi
Theses and Dissertations
Lie groups approach in differential equations was a breakthrough subject in the late nineteenth century. Sophus Lie, a Norwegian mathematician, introduced the systematic approach to study the solutions of differential equations. The main goal of this thesis is to study, using Lie's approach, the Euler-Bernoulli beam equation subject to swelling force, the fourth-order nonlinear differential equation used to describe the beam deflection under the swelling force. In particular, we will classify the symmetry groups of this equation, obtain several reductions, and demonstrate both analytical and numerical solutions.
Probing The Ground State Magnetism In Materials With Competing Magnetic Interactions, Richa Pokharel Madhogaria
Probing The Ground State Magnetism In Materials With Competing Magnetic Interactions, Richa Pokharel Madhogaria
USF Tampa Graduate Theses and Dissertations
Materials with competing magnetic interactions provide a unique combination of intriguing physics originating from structural, magnetic, and electronic degrees of freedom, along with their technological applications. The complex oxides and helimagnets also share an interesting physics involving competitive interactions and understanding the behavior of one helps us to yield an insight into the other system. A rigorous understanding about the competing interactions in strongly correlated magnetic systems provide an opportunity to explore the related effects like spin frustration, glassiness, metamagnetism, which play an essential role in manipulating their magnetic properties and functionality. In this dissertation, we combine dc magnetization [M(H,T)], …
The Effect Of Temperature On Seed Dormancy In An Alpine Meadow On The Eastern Tsinghai‐Tibet Plateau, Wenlong Li, Jing Xu, Guozhen Du, Zizhen Li
The Effect Of Temperature On Seed Dormancy In An Alpine Meadow On The Eastern Tsinghai‐Tibet Plateau, Wenlong Li, Jing Xu, Guozhen Du, Zizhen Li
IGC Proceedings (1993-2023)
No abstract provided.
Effects Of Ingestion By Cattle On Germinability Of Seeds Of Three Different Browse Plants, Alaba O. Jolaosho, B. O. Oduguwa, O. M. Arigbede, A. O. Olanite, Olufemi S. Onifade, Y. U. Anele, G. A. Amole
Effects Of Ingestion By Cattle On Germinability Of Seeds Of Three Different Browse Plants, Alaba O. Jolaosho, B. O. Oduguwa, O. M. Arigbede, A. O. Olanite, Olufemi S. Onifade, Y. U. Anele, G. A. Amole
IGC Proceedings (1993-2023)
No abstract provided.
Thermoelectric Generation And Thermophysical Properties Of Metal Oxide Nanofluids, Xinran Hou, Rong-Tsu Wang, Shaowen Huang, Jung-Chang Wang
Thermoelectric Generation And Thermophysical Properties Of Metal Oxide Nanofluids, Xinran Hou, Rong-Tsu Wang, Shaowen Huang, Jung-Chang Wang
Journal of Marine Science and Technology
This study describes the comprehensive characterization of the diverse water-based nanofluids involving aluminum oxide, titanium dioxide, and zinc oxide nanoparticles, which were prepared through the two-step synthesis method assisted by a microemulsion ultrasound skill with effects of both weight-percent concentration (wt.%) in the range of 1.0% and 5.0% and between 20 oC and 40 0C. The mean cluster size, zeta potential, pH value, viscosity, thermal conductivity, absorbance, light absorption, and electrical charge density of the various nanofluids were surveyed by relative experiments. The results showed that the 2 wt.% Al2O3, 2 wt.% TiO2 …
Wireless Sensor Network-Based Monitoring Of Bridge Pile Foundations For Detecting Scouring Depth, Han-Tang Huang, H. Ping Tserng, Ruei-Yu Hou, Mirosław Skibniewski
Wireless Sensor Network-Based Monitoring Of Bridge Pile Foundations For Detecting Scouring Depth, Han-Tang Huang, H. Ping Tserng, Ruei-Yu Hou, Mirosław Skibniewski
Journal of Marine Science and Technology
Climate change brings about unprecedented increases in the occurrence of storms and flooding. In response to increased risk of bridge pier scouring, there is a need for increased safety monitoring of bridges. This paper presents a wireless sensor network (WSN) - based solution developed to measure micro-vibrations of a bridge pier. Test measurement values are converted with the use of the Fast Fourier Transform (FFT) method to obtain natural frequencies. Scouring depth of the pier is estimated with the use of a Finite Element Method model. WSN is used to collect the signal and to test data transmission stability in …
A New Fuzzy Dea Model For Solving The Mcdm Problems In Supplier Selection, Chi-Mao Tsai, Hsuan-Shih Lee, Guo-Ya Gan
A New Fuzzy Dea Model For Solving The Mcdm Problems In Supplier Selection, Chi-Mao Tsai, Hsuan-Shih Lee, Guo-Ya Gan
Journal of Marine Science and Technology
Supplier selection is a crucial task in supply chain management, and good supply chain management is essential to a company's ability to develop sustainably and gain the trust and satisfaction of its customers. In modern supply chain management, supplier selection often takes the form of a multi-criteria decision-making (MCDM) problem. Thus, to solve this problem, this study formulated a novel fuzzy MCDM model, which is based on the fuzzy data envelopment analysis model. This novel approach can transform the linguistic variables of assessment criteria into well-founded quantitative data for calculation. Moreover, our approach can effectively discriminate between decision-making units (both …
Evaluation Of The Human Discomfort Caused By Ship Vibrations, Laurentiu Picu, Eugen Rusu
Evaluation Of The Human Discomfort Caused By Ship Vibrations, Laurentiu Picu, Eugen Rusu
Journal of Marine Science and Technology
The present work analyzes the subjective responses of people exposed to transient vibrations caused by systems with a single degree of freedom. In this context, the main objective of the research was to identify the main effect of vibrations on people's well-being at work (in particular on vessels crew) and to discover those frequencies that lead to the greatest discomfort. In order to achieve this goal, 12 laboratory experiments were carried out involving ten male subjects in good health, aged between 28 and 42. The variables of the vibratory system considered are: acceleration (4.8 ÷ 8.6 m/s¡2), amplitude (1 ÷ …
Application Of Physically Based Semi-Distributed Hec-Hms Model For Flow Simulation In Tributary Catchments Of Kaohsiung Area Taiwan, Fiaz Hussain, Ray-Shyan Wu, Kai-Chun Yu
Application Of Physically Based Semi-Distributed Hec-Hms Model For Flow Simulation In Tributary Catchments Of Kaohsiung Area Taiwan, Fiaz Hussain, Ray-Shyan Wu, Kai-Chun Yu
Journal of Marine Science and Technology
Hydrologic modeling is a commonly used tool to understand the rainfallerunoff processes of gauged and ungauged catchments for proper quantitative estimation of water resources availability. In the present study, an attempt is made to simulate surface runoff using a physically based semi-distributed hydrological (HEC-HMS) model for four local-scale tributary catchments of Kaohsiung area Taiwan. The input physical parameters of the model were calculated and preprocessed in HEC-GeoHMS based on digital elevation model (DEM), land use, soil and hydro-meteorological data. The model performance was satisfactory with Nash Sutcliffe Efficiency (NSE) ¼ 0.51 to 0.86 and the coefficient of determination (R2) ¼ …
Evaluating Key Factors Of Container Shipping Lines From The Perspective Of High-Tech Industry Shippers, Chien-Lung Hsu, Tien-Chun Ho
Evaluating Key Factors Of Container Shipping Lines From The Perspective Of High-Tech Industry Shippers, Chien-Lung Hsu, Tien-Chun Ho
Journal of Marine Science and Technology
Because of the changes in customers' needs and demands created by the development of container transport in the 1960s, the global container transport business has become increasingly competitive. With the high-tech industry ranged with one of the few competitive industries in Taiwan from 2002, container shipping lines have been forced to implement innovative operating patterns to meet the evolving demands of the high-tech industry shippers. This study conducts a survey questionnaire of domestic high-tech industry shippers to explore the different factors affecting their selection of container shipping lines, evaluating the key influencing factors by maritime marketing's 4C framework: customer needs, …
Beach Topography Surveying Using Unmanned Aerial Vehicle Photogrammetry Technology, Hui-Ming Fang, Kuan-Tsung Chang, Sung-Shan Hsiao, Shih-Peng Chiang
Beach Topography Surveying Using Unmanned Aerial Vehicle Photogrammetry Technology, Hui-Ming Fang, Kuan-Tsung Chang, Sung-Shan Hsiao, Shih-Peng Chiang
Journal of Marine Science and Technology
The mechanisms of in situ topography changes must be identified for spatial planning in coastal areas. In this study, the authors used in situ direct measurement methods and indirect remote-sensing technologies to develop a method for beach topography surveillance. Unmanned aerial vehicles (UAVs) have advantages of high portability and mobility and low operating altitude. Therefore, a UAV was equipped with a lightweight camera and a positioning system that comprised a global positioning system and an inertial measurement unit. Aerial photogrammetry and aerial triangu-lation methods were adopted for matching image feature points to obtain the corresponding topographic points in the sand. …
A Deep Topical N-Gram Model And Topic Discovery On Covid-19 News And Research Manuscripts, Yuan Du
A Deep Topical N-Gram Model And Topic Discovery On Covid-19 News And Research Manuscripts, Yuan Du
Electronic Thesis and Dissertation Repository
Topic modeling with the latent semantic analysis (LSA), the latent Dirichlet allocation (LDA) and the biterm topic model (BTM) has been successfully implemented and used in many areas, including movie reviews, recommender systems, and text summarization, etc. However, these models may become computationally intensive if tested on a humongous corpus. Considering the wide acceptance of machine learning based on deep neural networks, this research proposes two deep neural network (NN) variants, 2-layer NN and 3-layer NN of the LDA modeling techniques. The primary goal is to deal with problems with a large corpus using manageable computational resources.
This thesis analyze …
Effects Of Marsh Management In Coastal Marsh Impoundments On Marsh Vertical Accretion In The Face Of Sea Level Rise., Scott P. Graham
Effects Of Marsh Management In Coastal Marsh Impoundments On Marsh Vertical Accretion In The Face Of Sea Level Rise., Scott P. Graham
LSU Master's Theses
Many coastal marshes are managed for wildlife through the use of levees and water control structures. Management techniques such as water manipulation, herbicide application, and controlled burns are used to set back succession and facilitate recruitment of annual plant species, which are highly sought after by many wildlife. These marsh impoundments alter or prevent natural tidal exchange, which might alter or prevent sediment and nutrient inputs to the marsh. Although these management techniques are effective in managing for wildlife, there are few studies comparing vertical accretion between managed and unmanaged marshes. Vertical accretion is important because it allows coastal wetlands …
Adsorption And Transport Of Colloids At Interface And In Bulk, Jingyun Lee
Adsorption And Transport Of Colloids At Interface And In Bulk, Jingyun Lee
LSU Doctoral Dissertations
Colloids are suspensions of microscopic insoluble particles dispersed in a continuum phase such as liquid or gas. Colloids are found in our everyday life from food and cosmetic industries to pharmaceutical and biomedical applications. Depending on a global minimum of the free-energy landscape, colloidal suspensions can be classified as two major classes: equilibrium or active colloidal system. This Ph.D dissertation presents strategies to engineer equilibrium self-assembled structures and out-of-equilibrium active matter using various interparticle forces.
First, we introduce the means to promote the equilibrium self-assembled structures driven by adsorption of colloids at interface. Typically, adsorption of colloids at interface is …
Vimentin Tunes Cell Migration On Collagen By Controlling Β1 Integrin Activation And Clustering, Zofia Ostrowska-Podhorodecka, Isabel Ding, Wilson Lee, Jelena Tanic, Sevil Abbasi, Pamma D. Arora, Richard S. Liu, Alison E. Patteson, Paul A. Janmey, Christopher A. Mcculloch
Vimentin Tunes Cell Migration On Collagen By Controlling Β1 Integrin Activation And Clustering, Zofia Ostrowska-Podhorodecka, Isabel Ding, Wilson Lee, Jelena Tanic, Sevil Abbasi, Pamma D. Arora, Richard S. Liu, Alison E. Patteson, Paul A. Janmey, Christopher A. Mcculloch
Physics - All Scholarship
Vimentin is a structural protein that is required for mesenchymal cell migration and directly interacts with actin, β1 integrin and paxillin. We examined how these interactions enable vimentin to regulate cell migration on collagen. In fibroblasts, depletion of vimentin increased talin-dependent activation of β1 integrin by more than 2-fold. Loss of vimentin was associated with reduction of β1 integrin clustering by 50% and inhibition of paxillin recruitment to focal adhesions by more than 60%, which was restored by vimentin expression. This reduction of paxillin was associated with 65% lower Cdc42 activation, a 60% reduction of cell extension formation and a …
Mathematical Modeling Of The Candida Albicans Yeast To Hyphal Transition Reveals Novel Control Strategies, David J. Wooten, Jorge Gómez Tejeda Zañudo, David Murrugarra, Austin M. Perry, Anna Dongari-Bagtzoglou, Reinhard Laubenbacher, Clarissa J. Nobile, Réka Albert
Mathematical Modeling Of The Candida Albicans Yeast To Hyphal Transition Reveals Novel Control Strategies, David J. Wooten, Jorge Gómez Tejeda Zañudo, David Murrugarra, Austin M. Perry, Anna Dongari-Bagtzoglou, Reinhard Laubenbacher, Clarissa J. Nobile, Réka Albert
Mathematics Faculty Publications
Candida albicans, an opportunistic fungal pathogen, is a significant cause of human infections, particularly in immunocompromised individuals. Phenotypic plasticity between two morphological phenotypes, yeast and hyphae, is a key mechanism by which C. albicans can thrive in many microenvironments and cause disease in the host. Understanding the decision points and key driver genes controlling this important transition and how these genes respond to different environmental signals is critical to understanding how C. albicans causes infections in the host. Here we build and analyze a Boolean dynamical model of the C. albicans yeast to hyphal transition, integrating …
Heterogeneous Bacterial Swarms With Mixed Lengths, Shlomit Peled, Shawn D. Ryan, Sebastian Heidenreich, Markus Baer, Gil Ariel, Avraham Be'er
Heterogeneous Bacterial Swarms With Mixed Lengths, Shlomit Peled, Shawn D. Ryan, Sebastian Heidenreich, Markus Baer, Gil Ariel, Avraham Be'er
Mathematics and Statistics Faculty Publications
Heterogeneous systems of active matter exhibit a range of complex emergent dynamical patterns. In particular, it is difficult to predict the properties of the mixed system based on its constituents. These considerations are particularly significant for understanding realistic bacterial swarms, which typically develop heterogeneities even when grown from a single cell. Here, mixed swarms of cells with different aspect ratios are studied both experimentally and in simulations. In contrast with previous theory, there is no macroscopic phase segregation. However, locally, long cells act as nucleation cites, around which aggregates of short, rapidly moving cells can form, resulting in enhanced swarming …
Tribal Revegetation Project Final Project Report: 92-Acre Area, Area 5 Radioactive Waste Management Complex, Nevada National Security Site, Nevada, Jeremy Spoon, Brittany Kruger, Richard Arnold, Kate Monti Barcalow, Tribal Revegetation Committee, Trc
Tribal Revegetation Project Final Project Report: 92-Acre Area, Area 5 Radioactive Waste Management Complex, Nevada National Security Site, Nevada, Jeremy Spoon, Brittany Kruger, Richard Arnold, Kate Monti Barcalow, Tribal Revegetation Committee, Trc
Anthropology Faculty Publications and Presentations
Nuwu (Southern Paiute), Newe (Western Shoshone), and Nuumu (Owens Valley Paiute) are linguistically related, Numic-speaking peoples who are part of the broader Uto-Aztecan language group. Numic peoples view the land as a holistic, living, sentient being with feelings and purpose. The land is personified with human characteristics and it needs to be experienced to be understood through “learning by doing.” Numic peoples do not support ground disturbing activities within their ancestral lands, including activities tied to the storage of low-level radioactive waste or classified materials on the NNSS, which they view as culturally inappropriate. These deep-rooted ancestral connections are the …
Forecasting Of The Covid-19 Epidemic: A Scientometric Analysis, Pandri Ferdias, Ansari Saleh Ahmar
Forecasting Of The Covid-19 Epidemic: A Scientometric Analysis, Pandri Ferdias, Ansari Saleh Ahmar
Library Philosophy and Practice (e-journal)
This study presented a scientometric analysis of scientific publications with discussions of forecasting and COVID-19. The data of this study were obtained from the Scopus database using the keywords: ( TITLE-ABS-KEY (forecast) AND TITLE-ABS-KEY (covid)) and the data were taken on March 26, 2021. This study was a scientometric study. The data were subsequently analyzed using the VosViewer and Bibliometrix R Package. The results showed that “COVID-19” was the keyword most frequently used by researchers, followed by “forecasting” and “human”. Authors who discussed the topic of forecasting COVID-19 come from 83 different countries/regions, with the most articles sent by authors …
Effects Of Different Salts And Concentrations On Germination And Growth Of Leymus Chinensis, L. H. Huang, Z. W. Liang, H. Y. Ma, M. Liu, C. Yan, Z. C. Wang
Effects Of Different Salts And Concentrations On Germination And Growth Of Leymus Chinensis, L. H. Huang, Z. W. Liang, H. Y. Ma, M. Liu, C. Yan, Z. C. Wang
IGC Proceedings (1993-2023)
No abstract provided.
Effects Of Grazing On Wind Driven Matter Fluxes In The Xilingele Grassland, Inner Mongolia, C. Hoffmann, R. Funk
Effects Of Grazing On Wind Driven Matter Fluxes In The Xilingele Grassland, Inner Mongolia, C. Hoffmann, R. Funk
IGC Proceedings (1993-2023)
No abstract provided.
Desertification Mapping By Iranian Classification Of Desertification (Icd) Method Case Study: Kohdasht Watershed In Iran, G. R. Zehtabian, G. R. Chamanpira, H. Ahmadi, H. Khosravi
Desertification Mapping By Iranian Classification Of Desertification (Icd) Method Case Study: Kohdasht Watershed In Iran, G. R. Zehtabian, G. R. Chamanpira, H. Ahmadi, H. Khosravi
IGC Proceedings (1993-2023)
No abstract provided.
Energy Balance Analysis Of Integrated Crop‐Livestock Production System In Tianshui Town, Huanxian County Of Gansu Province, Xiaoyan Wang, Fujiang Hou, Randall Jones
Energy Balance Analysis Of Integrated Crop‐Livestock Production System In Tianshui Town, Huanxian County Of Gansu Province, Xiaoyan Wang, Fujiang Hou, Randall Jones
IGC Proceedings (1993-2023)
No abstract provided.
Effect Of Oxytropis Species Consumption On Sheep Forage Preference In Northeastern Qing‐Tibetan Plateau, Shengyao Wang, Kun Wang, Yonglai Zh.
Effect Of Oxytropis Species Consumption On Sheep Forage Preference In Northeastern Qing‐Tibetan Plateau, Shengyao Wang, Kun Wang, Yonglai Zh.
IGC Proceedings (1993-2023)
No abstract provided.
Is The Relationship Between Mining And Climate Change Only One-Way? Climate Change Potential Impacts On Mining Activity – Hazards, Risks And Adaptation Measures, Małgorzata Markowska
Is The Relationship Between Mining And Climate Change Only One-Way? Climate Change Potential Impacts On Mining Activity – Hazards, Risks And Adaptation Measures, Małgorzata Markowska
Journal of Sustainable Mining
No abstract provided.
Effect Of Sexual Reproduction And Seedling Recruitment On Vegetation Dynamics In Grasslands, Christian Huyghe, Isabelle Litrico, F. I. Martinez, M. Philip Rolston
Effect Of Sexual Reproduction And Seedling Recruitment On Vegetation Dynamics In Grasslands, Christian Huyghe, Isabelle Litrico, F. I. Martinez, M. Philip Rolston
IGC Proceedings (1993-2023)
No abstract provided.
Seed Production Of Native Grassland Plants, M. Philip Rolston, Christian Huyghe
Seed Production Of Native Grassland Plants, M. Philip Rolston, Christian Huyghe
IGC Proceedings (1993-2023)
No abstract provided.
Establishment And Effects On Soil And Pasture Of Diverse Arrangements Of Acacia Decurrens, Acacia Melanoxylon And Alnus Acuminata As Silvopasture Systems In The High Tropic In Colombia, A. Conde, L. L. Betancourt, C. J. Jaramillo, A. Umaña, D. Barrera, D. R. Chamorro
Establishment And Effects On Soil And Pasture Of Diverse Arrangements Of Acacia Decurrens, Acacia Melanoxylon And Alnus Acuminata As Silvopasture Systems In The High Tropic In Colombia, A. Conde, L. L. Betancourt, C. J. Jaramillo, A. Umaña, D. Barrera, D. R. Chamorro
IGC Proceedings (1993-2023)
No abstract provided.
Sustainable Agricultural And Rural Development In Semi‐Arid Environment When Supplementing Rainfall With 200 Mm Irrigation Water Per Year, Benzarti Jalila, Ben Youssef Salah
Sustainable Agricultural And Rural Development In Semi‐Arid Environment When Supplementing Rainfall With 200 Mm Irrigation Water Per Year, Benzarti Jalila, Ben Youssef Salah
IGC Proceedings (1993-2023)
No abstract provided.
Animal Unit Weight And Daily Requirement Of Sangsary Sheep Breed, Hossein Arzani, Mehdi Ghorbani, A. Nikkhah, Hossein Azarnivand
Animal Unit Weight And Daily Requirement Of Sangsary Sheep Breed, Hossein Arzani, Mehdi Ghorbani, A. Nikkhah, Hossein Azarnivand
IGC Proceedings (1993-2023)
No abstract provided.