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Articles 3181 - 3210 of 21795
Full-Text Articles in Engineering
Tilia_Platyphyllos, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Tilia_Platyphyllos, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Ulmus_Laevis, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Ulmus_Laevis, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Acer Negundo, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Acer Negundo, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Carya Cordiformis, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Carya Cordiformis, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Fraxinus Nigra, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Fraxinus Nigra, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Liriodendron Tulipifera, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Liriodendron Tulipifera, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Magnolia Denudata, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Magnolia Denudata, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Olea Oleaster, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Olea Oleaster, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Salix Caroliniana, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Salix Caroliniana, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Salix Purpurea, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Salix Purpurea, Viraj Kishorkumar Gajjar, Anand Nambisan, Kurt Louis Kosbar
Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images
No abstract provided.
Correlations Between Mechanical And Index Properties Of Sandstone From The Central Salt Range, M. Z. Emad, M. U. Khan, S. A. Saki, M. A. Raza, M. U. Tahir
Correlations Between Mechanical And Index Properties Of Sandstone From The Central Salt Range, M. Z. Emad, M. U. Khan, S. A. Saki, M. A. Raza, M. U. Tahir
Mining Engineering Faculty Research & Creative Works
Abstract: A study was conducted to uncover the possible correlations among mechanical and index properties of sandstones from formations of Salt Range area, Punjab, Pakistan. For this purpose, sandstone block samples were collected from seven formations of the Salt Range. The samples were prepared for rock testing according to the guidelines set by International Society of Rock Mechanics (ISRM). Defective samples were discarded and those meeting the ISRM specifications were tested for sonic velocities, dry density, porosity, uniaxial compressive strength, tensile strength and elastic constants. Results obtained were then statistically analyzed to find the predictive relationships. The analysis revealed that …
Numerical Study Of Graphene/Au/Sic Waveguide-Based Surface Plasmon Resonance Sensor, Wei Du, Lucas Miller, Feng Zhao
Numerical Study Of Graphene/Au/Sic Waveguide-Based Surface Plasmon Resonance Sensor, Wei Du, Lucas Miller, Feng Zhao
Electrical and Computer Engineering Faculty Research & Creative Works
A new waveguide-based surface plasmon resonance (SPR) sensor was proposed and investigated by numerical simulation. The sensor consists of a graphene cover layer, a gold (Au) thin film, and a silicon carbide (SiC) waveguide layer on a silicon dioxide/silicon (SiO2 /Si) substrate. The large bandgap energy of SiC allows the sensor to operate in the visible and near-infrared wavelength ranges, which effectively reduces the light absorption in water to improve the sensitivity. The sensor was characterized by comparing the shift of the resonance wavelength peak with change of the refractive index (RI), which mimics the change of analyte concentration …
Extracellular Matrix-Mimetic Hydrogels For Treating Neural Tissue Injury: A Focus On Fibrin, Hyaluronic Acid, And Elastin-Like Polypeptide Hydrogels, Derek W. Nelson, Ryan J. Gilbert
Extracellular Matrix-Mimetic Hydrogels For Treating Neural Tissue Injury: A Focus On Fibrin, Hyaluronic Acid, And Elastin-Like Polypeptide Hydrogels, Derek W. Nelson, Ryan J. Gilbert
Chemical and Biochemical Engineering Faculty Research & Creative Works
Neurological and functional recovery is limited following central nervous system injury and severe injury to the peripheral nervous system. Extracellular matrix (ECM)-mimetic hydrogels are of particular interest as regenerative scaffolds for the injured nervous system as they provide 3D bioactive interfaces that modulate cellular response to the injury environment and provide naturally degradable scaffolding for effective tissue remodeling. In this review, three unique ECM-mimetic hydrogels used in models of neural injury are reviewed: fibrin hydrogels, which rely on a naturally occurring enzymatic gelation, hyaluronic acid hydrogels, which require chemical modification prior to chemical crosslinking, and elastin-like polypeptide (ELP) hydrogels, which …
Experimental Investigation Of Additive Manufacturing Of Continuous Carbon Fiber Composites With Multifunctional Electro-Tensile Properties, Ritesh Ghimire, Frank W. Liou
Experimental Investigation Of Additive Manufacturing Of Continuous Carbon Fiber Composites With Multifunctional Electro-Tensile Properties, Ritesh Ghimire, Frank W. Liou
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Manufacturing processes for monofunctional and multifunctional materials vary depending on the design optimization. Multifunctional continuous carbon fiber composites provide great potential in achieving coupled structural and electrical properties for their applications in aircraft, unmanned aircraft systems, and spacecraft. Proper optimization of tensile and electrical properties offers benefits early in the design and continuous operational safety phases to obtain coupled multifunctional properties. In this paper, fused filament fabrication additive manufacturing (AM) technique was used to fabricate continuous carbon fiber solid laminated composites test coupons. The proposed new method characterizes the electrical conductivity's coupled effects on the tensile properties, including the failure …
Dc Bus Voltage Selection For A Grid-Connected Low-Voltage Dc Residential Nanogrid Using Real Data With Modified Load Profiles, Saeed Habibi, Ramin Rahimi, Mehdi Ferdowsi, Pourya Shamsi
Dc Bus Voltage Selection For A Grid-Connected Low-Voltage Dc Residential Nanogrid Using Real Data With Modified Load Profiles, Saeed Habibi, Ramin Rahimi, Mehdi Ferdowsi, Pourya Shamsi
Electrical and Computer Engineering Faculty Research & Creative Works
This study examines various low voltage levels applied to a direct current residential nanogrid (DC-RNG) with respect to the efficiency and component cost of the system. Due to the significant increase in DC-compatible loads, on-site Photovoltaic (PV) generation, and local battery storage, DC distribution has gained considerable attention in buildings. To provide an accurate evaluation of the DC-RNG's efficiency and component cost, a one-year load profile of a conventional AC-powered house is considered, and AC appliances' load profiles are scaled to their equivalent available DC appliances. Based on the modified load profiles, proper wiring schemes, converters, and protection devices are …
Construction Of Spatial Filtering Matrices For Norm-Optimal Ilc In Single Point Incremental Forming, Joseph D. Fischer, Mitchell R. Woodside, Douglas A. Bristow, Robert G. Landers
Construction Of Spatial Filtering Matrices For Norm-Optimal Ilc In Single Point Incremental Forming, Joseph D. Fischer, Mitchell R. Woodside, Douglas A. Bristow, Robert G. Landers
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Iterative Learning Control (ILC) is a control technique used to improve performance in repetitive processes. ILC has grown in popularity in part due to its ease of implementation and ability to achieve high levels of accuracy even in complex nonlinear systems. However, a fundamental limitation of ILC is that it relies on system repetition, making the impact of non-repetitive disturbances (e.g., noise) on the controller's performance severe. Much work has been done to reject noise in the time domain; however, little has been done to address noise which is spatial in nature. In this work, a method for limiting noise …
Toughening Mechanisms For The Attachment Of Architectured Materials: The Mechanics Of The Tendon Enthesis, Mikhail Golman, Adam C. Abraham, Iden Kurtaliaj, Brittany P. Marshall, Yizhong Jenny Hu, Andrea G. Schwartz, X. Edward Guo, Victor Birman, Philipp J. Thurner, Guy M. Genin, Stavros Thomopoulos
Toughening Mechanisms For The Attachment Of Architectured Materials: The Mechanics Of The Tendon Enthesis, Mikhail Golman, Adam C. Abraham, Iden Kurtaliaj, Brittany P. Marshall, Yizhong Jenny Hu, Andrea G. Schwartz, X. Edward Guo, Victor Birman, Philipp J. Thurner, Guy M. Genin, Stavros Thomopoulos
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Architectured materials offer tailored mechanical properties but are limited in engineering applications due to challenges in maintaining toughness across their attachments. The enthesis connects tendon and bone, two vastly different architectured materials, and exhibits toughness across a wide range of loadings. Understanding the mechanisms by which this is achieved could inform the development of engineered attachments. Integrating experiments, simulations, and previously unexplored imaging that enabled simultaneous observation of mineralized and unmineralized tissues, we identified putative mechanisms of enthesis toughening in a mouse model and then manipulated these mechanisms via in vivo control of mineralization and architecture. Imaging uncovered a fibrous …
A Conceptual Efficient Design Of Energy Recovery Systems Using A New Energy-Area Key Parameter, Ibrahim H. Alhajri, Mamdouh A. Gadalla, Hany A. Elazab
A Conceptual Efficient Design Of Energy Recovery Systems Using A New Energy-Area Key Parameter, Ibrahim H. Alhajri, Mamdouh A. Gadalla, Hany A. Elazab
Chemical and Biochemical Engineering Faculty Research & Creative Works
Energy integration in petrochemical and refining industries is an effective concept to minimize dependence on heating and cooling utilities through networks of exchanger equipment. Pinch Analysis is very popular and successful technique to optimize heat recovery between heat sources and sinks. Yet, design of networks of exchangers is challenging and requires careful attention to energy consumption and exchanger areas. This work presents a graphical methodology to design exchanger networks taking into account both heat loads and transfer areas of exchanger units in one single information. A new parameter is introduced for design that is the ratio between the heat load …
Erratum: “Numerical Investigation Of Diesel Particulate Matter Dispersion In An Underground Development Face During Key Mining Activities”. [Adv. Powder Technol. 31 (2020) 3882–3896] (Advanced Powder Technology (2020) 31(9) (3882–3896), (S0921883120303691), (10.1016/J.Apt.2020.07.031)), Ping Chang, Guang Xu, Benjamin Mullins, S. Abishek, Mostafa Sharifzadeh
Erratum: “Numerical Investigation Of Diesel Particulate Matter Dispersion In An Underground Development Face During Key Mining Activities”. [Adv. Powder Technol. 31 (2020) 3882–3896] (Advanced Powder Technology (2020) 31(9) (3882–3896), (S0921883120303691), (10.1016/J.Apt.2020.07.031)), Ping Chang, Guang Xu, Benjamin Mullins, S. Abishek, Mostafa Sharifzadeh
Mining Engineering Faculty Research & Creative Works
The authors regret (M495), and the Department of Mines, Industry Regulation and Safety, with in-kind support from Barminco, the SF6 measured data points provided by Chem Centre, and the computation resources provided by the Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia.> The authors would like to apologize for any inconvenience caused.
A Control Oriented Comprehensive Degradation Model For Battery Energy Storage System Life Prediction, Yaqi Zhu, Tazdik Plateau, Brody Riemann, Robert Landers, Jonghyun Park
A Control Oriented Comprehensive Degradation Model For Battery Energy Storage System Life Prediction, Yaqi Zhu, Tazdik Plateau, Brody Riemann, Robert Landers, Jonghyun Park
Mechanical and Aerospace Engineering Faculty Research & Creative Works
In order to ensure that stationary battery energy storage systems (BESSs) provide reliable energy buffering, both for power quality and economic purposes, the degradation must be considered. Cell degradation involves various side reactions and is highly dependent on its operating conditions. To accurately track cell degradation and predict its impact on battery behavior, a comprehensive physics-based degradation model based on an electrolyte phase-enhanced single particle (SP) model is developed. Key degradation physics, namely solid electrolyte interphase (SEI) layer formation and growth, Li plating on the graphite anode, and Mn dissolution on cathode of nickel-cobalt-manganese oxide (NMC622) are considered. The model …
Additive Manufacturing Of Stainless Steel -- Copper Functionally Graded Materials Via Inconel 718 Interlayer, Xinchang Zhang, Lan Li, Frank W. Liou
Additive Manufacturing Of Stainless Steel -- Copper Functionally Graded Materials Via Inconel 718 Interlayer, Xinchang Zhang, Lan Li, Frank W. Liou
Mechanical and Aerospace Engineering Faculty Research & Creative Works
The joining of dissimilar materials is becoming increasingly prevalent to integrate different material properties to enhance design flexibility and overall performance. This study introduced an innovative approach to additively manufacture copper on 316L stainless steel (SS316L) via Inconel 718 interlayers using directed energy deposition (DED). The novel multi-material structure was studied both experimentally and theoretically. The microstructure, tensile properties, microhardness, and thermal performance of the structure were characterized. Residual stress distribution over the structure was revealed by experimental-validated numerical modeling. The result exhibits that defect-free structures with excellent interfacial bonding can be achieved by introducing Inconel 718 interlayers. The bonding …
A Novel Reduced-Order Method For Analysis Of Hyperspectral Images, Yanming Zhang, Lijun Jiang
A Novel Reduced-Order Method For Analysis Of Hyperspectral Images, Yanming Zhang, Lijun Jiang
Electrical and Computer Engineering Faculty Research & Creative Works
Hyperspectral imaging technology has been broadly applied in remote sensing because it collects echoed signals from across the electromagnetic (EM) spectrum and provides fruitfully helpful information. However, the processing or transformation of high-data-volume hyperspectral images, also viewed as snapshots varying with the EM spectrum, burdens the hardware resources, especially for the high spectral resolution and spatial resolution cases. To tackle this challenge, a novel reduced-order method based on the dynamic mode decomposition (DMD) algorithm is presented here to analyze hyperspectral images. The method decomposes the spatial-spectral hyperspectral images in terms of spatial dynamic modes and corresponding spectral patterns. Then, these …
Faster Post-Earthquake Damage Assessment Based On 1d Convolutional Neural Networks, Xinzhe Yuan, Dustin Tanksley, Liujun Li, Haibin Zhang, Genda Chen, Donald C. Wunsch
Faster Post-Earthquake Damage Assessment Based On 1d Convolutional Neural Networks, Xinzhe Yuan, Dustin Tanksley, Liujun Li, Haibin Zhang, Genda Chen, Donald C. Wunsch
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Contemporary deep learning approaches for post-earthquake damage assessments based on 2D convolutional neural networks (CNNs) require encoding of ground motion records to transform their inherent 1D time series to 2D images, thus requiring high computing time and resources. This study develops a 1D CNN model to avoid the costly 2D image encoding. The 1D CNN model is compared with a 2D CNN model with wavelet transform encoding and a feedforward neural network (FNN) model to evaluate prediction performance and computational efficiency. A case study of a benchmark reinforced concrete (r/c) building indicated that the 1D CNN model achieved a prediction …
Systematic Evaluation Of A Novel Self-Healing Poly(Acrylamide-Co-Vinyl Acetate)/Alginate Polymer Gel For Fluid Flow Control In High Temperature And High Salinity Reservoirs, Jingyang Pu, Baojun Bai, Thomas P. Schuman
Systematic Evaluation Of A Novel Self-Healing Poly(Acrylamide-Co-Vinyl Acetate)/Alginate Polymer Gel For Fluid Flow Control In High Temperature And High Salinity Reservoirs, Jingyang Pu, Baojun Bai, Thomas P. Schuman
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Preferential fluid flow often occurs when water and CO2 is injected into mature oilfields, sig-nificantly reducing their injection efficiency. Particle gels have been evaluated and applied to control the short circulation problems. This study systematically investigated a novel poly(acrylamide-co-vinyl acetate)/alginate-based interpenetrated gel system (Alg-IPNG) which is designed to control the preferential fluid flow problems in high-temperature reservoirs. Chromium acetate was incorporated into the gel system to provide the delayed crosslinking feature of the particle gels. The alginate polymer system can also take advantage of the Ca2+ ions in the formation water, which exist in most reservoirs, to reinforce …
Pairing Experimental And Mathematical Modeling Studies On Fluidized Beds For Enhancement Of Models Predictive Quality: A Current Status Overview, Sebastián Uribe, Muthanna H. Al-Dahhan
Pairing Experimental And Mathematical Modeling Studies On Fluidized Beds For Enhancement Of Models Predictive Quality: A Current Status Overview, Sebastián Uribe, Muthanna H. Al-Dahhan
Chemical and Biochemical Engineering Faculty Research & Creative Works
Modeling of gas-solid fluidized systems has been a prevailing challenge over the last few decades. With different approaches and implementing different sub-models to capture the essential multiphase and multiscale phenomena in these systems, major advances have been achieved, even though most models are only subject to a practical validation of macroscopic parameters. The current description of fluidized beds through mathematical models relies on the inclusion of vast sub-models, leading to an unquantifiable degree of uncertainty on the models' applicability for extrapolation studies. Furthermore, each closure and fitting parameter in the model represents a possible source of deviation, and their optimization, …
Solvent-Free Solid-State Lithium Battery Based On Lifepo₄ And Mwcnt/Peo/Pvdf-Hfp For High-Temperature Applications, Han Yu, Ye Jin, Guodong David Zhan, Xinhua Liang
Solvent-Free Solid-State Lithium Battery Based On Lifepo₄ And Mwcnt/Peo/Pvdf-Hfp For High-Temperature Applications, Han Yu, Ye Jin, Guodong David Zhan, Xinhua Liang
Chemical and Biochemical Engineering Faculty Research & Creative Works
Rechargeable lithium-ion batteries (LIBs) have a wide range of applications but face challenges in harsh working or operating environments at high temperatures. In this work, a solid polymer electrolyte with MWCNT-COOH as an additive (MWCNT-SPE) was obtained. MWCNT-SPE has a high thermal stability and can be used in high-temperature operating environments. Solid-state lithium batteries based on MWCNT-SPE and LiFePO4 were assembled. The resulting lithium batteries exhibited excellent electrochemical properties at 70 and 120 °C, demonstrating a wide range of operations suitable for solid-state batteries with extreme demands. The symmetrical Li/MWCNT-SPE/Li cell operated for 1800 h with low polarization voltage …
Nonvolatile Resistive Switching Memory Based On Monosaccharide Fructose Film, Yuan Xing, Brandon Sueoka, Kuan Yew Cheong, Feng Zhao
Nonvolatile Resistive Switching Memory Based On Monosaccharide Fructose Film, Yuan Xing, Brandon Sueoka, Kuan Yew Cheong, Feng Zhao
Electrical and Computer Engineering Faculty Research & Creative Works
In this paper, we report resistive random-access memory (RRAM) based on a monosaccharide—fructose for nonvolatile memory in biocompatible and "green" electronics. Fructose thin film acts as the resistive switching layer with Al and Ag top electrodes for comparison. Both devices demonstrated highly reproducible nonvolatile bipolar resistive switching behaviors with a large on/off ratio of ∼106 for the Al electrode and ∼105 for the Ag electrode. The forming voltage, set voltage, and memory window are also larger for the Al electrode than the Ag electrode, but the reset voltages are comparable. Dominant conduction mechanisms of fructose films were proposed. …
Open-Ended Hollow Coaxial Cable Resonator Sensor, Jie Huang, Chen Zhu, Rex E. Gerald Ii
Open-Ended Hollow Coaxial Cable Resonator Sensor, Jie Huang, Chen Zhu, Rex E. Gerald Ii
Electrical and Computer Engineering Faculty Research & Creative Works
An open-ended hollow coaxial cable resonator probe configured to receive an aerosol sample for analysis. A metal post shorts the resonator's inner and outer conductors. A metal plate is spaced apart from an open end of the resonator by a dielectric layer that contains the received aerosol sample. Interrogator circuitry coupled to the resonator transmits an electromagnetic wave within the resonator and generates an electric field at the open end of the resonator. The interrogator circuitry is responsive to the generated electric field for determining a resonance frequency and an impedance of the resonator when the aerosol sample is present …
Machine Learning For High-Fidelity Prediction Of Cement Hydration Kinetics In Blended Systems, Rachel Cook, Taihao Han, Alaina Childers, Cambria Ryckman, Kamal Khayat, Hongyan Ma, Jie Huang, Aditya Kumar
Machine Learning For High-Fidelity Prediction Of Cement Hydration Kinetics In Blended Systems, Rachel Cook, Taihao Han, Alaina Childers, Cambria Ryckman, Kamal Khayat, Hongyan Ma, Jie Huang, Aditya Kumar
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The production of ordinary Portland cement (OPC), the most broadly utilized man-made material, has been scrutinized due to its contributions to global anthropogenic CO2 emissions. Thus -- to mitigate CO2 emissions -- mineral additives have been promulgated as partial replacements for OPC. However, additives -- depending on their physiochemical characteristics -- can exert varying effects on OPC's hydration kinetics. Therefore -- in regards to more complex systems -- it is infeasible for semi-empirical kinetic models to reveal the underlying nonlinear composition-property (i.e., reactivity) relationships. In the past decade or so, machine learning (ML) has arisen as a promising, …
Asphaltene Thermodynamic Flocculation During Immiscible Nitrogen Gas Injection, Mukhtar Elturki, Abdulmohsin Imqam
Asphaltene Thermodynamic Flocculation During Immiscible Nitrogen Gas Injection, Mukhtar Elturki, Abdulmohsin Imqam
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Gas-enhanced oil recovery is one of the most advantageous enhanced oil recovery methods. Nitrogen is one of the most investigated gases because of its beneficial properties. However, during its interaction with crude oil, nitrogen can induce asphaltene deposition, which may result in severe formation damage and pore plugging. Few works have investigated the impact of nitrogen on asphaltene instability. This research studied the immiscibility conditions for nitrogen in nanopores and the impact of nitrogen on asphaltene precipitations, which could lead to plugging pores and oil recovery reduction. A slimtube was used to determine the minimum miscibility pressure (MMP) of nitrogen …