Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (21760)
- Civil and Environmental Engineering (7867)
- Physical Sciences and Mathematics (7287)
- Electrical and Computer Engineering (5128)
- Geotechnical Engineering (3713)
-
- Physics (2388)
- Chemical Engineering (2339)
- Materials Science and Engineering (2228)
- Mechanical Engineering (2224)
- Structural Engineering (2016)
- Computer Sciences (1925)
- Chemistry (1552)
- Mining Engineering (1185)
- Aerospace Engineering (1156)
- Civil Engineering (1047)
- Operations Research, Systems Engineering and Industrial Engineering (845)
- Earth Sciences (775)
- Social and Behavioral Sciences (774)
- Architecture (761)
- Metallurgy (744)
- Architectural Engineering (737)
- Biochemical and Biomolecular Engineering (691)
- Geology (676)
- Ceramic Materials (639)
- Mathematics (631)
- Petroleum Engineering (604)
- Statistics and Probability (533)
- Life Sciences (491)
- Biology (393)
- Geological Engineering (368)
- Keyword
-
- Electromagnetic Interference (106)
- Machine learning (100)
- Electromagnetic Compatibility (97)
- Additive manufacturing (90)
- Neurocontrollers (89)
-
- Optimal Control (86)
- Optimization (82)
- Rheology (74)
- Neural Nets (69)
- Neural Networks (67)
- Simulation (66)
- Deep learning (65)
- Computer Simulation (64)
- Machine Learning (63)
- Mathematical Models (63)
- Ionization (60)
- Printed Circuit Boards (59)
- Printed Circuits (59)
- Stability (59)
- Additive Manufacturing (58)
- Finite Difference Time-Domain Analysis (58)
- Power System Control (58)
- Modeling (54)
- Hydrogen (53)
- Microstructure (52)
- EMI (51)
- Nonlinear Control Systems (51)
- Adaptive Control (49)
- Control System Synthesis (48)
- Power Electronics (47)
- Publication Year
- Publication
-
- Masters Theses (4182)
- Electrical and Computer Engineering Faculty Research & Creative Works (3501)
- The Missouri Miner Newspaper (3345)
- Doctoral Dissertations (2102)
- International Conference on Case Histories in Geotechnical Engineering (2057)
-
- Physics Faculty Research & Creative Works (1972)
- International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics (1566)
- Mechanical and Aerospace Engineering Faculty Research & Creative Works (1296)
- Civil, Architectural and Environmental Engineering Faculty Research & Creative Works (1275)
- CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018) (1036)
- Materials Science and Engineering Faculty Research & Creative Works (1028)
- Chemistry Faculty Research & Creative Works (950)
- Computer Science Faculty Research & Creative Works (911)
- Chemical and Biochemical Engineering Faculty Research & Creative Works (853)
- Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works (524)
- Engineering Management and Systems Engineering Faculty Research & Creative Works (492)
- Mathematics and Statistics Faculty Research & Creative Works (470)
- UMR-MEC Conference on Energy / UMR-DNR Conference on Energy (442)
- Missouri S&T Magazine (429)
- Plant Identification in a Combined-Imbalanced Leaf Dataset -- Images (374)
- Bachelors Theses (358)
- Professional Degree Theses (338)
- Mining Engineering Faculty Research & Creative Works (315)
- Undergraduate Research Conference at Missouri S&T (281)
- Biological Sciences Faculty Research & Creative Works (270)
- Opportunities for Undergraduate Research Experience Program (OURE) (255)
- American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present) (237)
- CCFSS Library (1939 - present) (234)
- Computer Science Technical Reports (197)
- Minutes & Agendas (159)
- Publication Type
- File Type
Articles 6541 - 6570 of 33648
Full-Text Articles in Entire DC Network
Characterization Of Mgal₂O₄ Sintered Ceramics, Nina Obradovic, William Fahrenholtz, Suzana Filipovic, Cole Corlett, Pavle Dordevic, Jelena Rogan, Predrag J. Vulic, Vladimir Buljak, Vladimir Pavlovic
Characterization Of Mgal₂O₄ Sintered Ceramics, Nina Obradovic, William Fahrenholtz, Suzana Filipovic, Cole Corlett, Pavle Dordevic, Jelena Rogan, Predrag J. Vulic, Vladimir Buljak, Vladimir Pavlovic
Materials Science and Engineering Faculty Research & Creative Works
Single phase MgAl2O4 was made from a one-to-one molar ratio of MgO and Al2O3 powders mixed using ball-milling. Mixtures of MgO and Al2O3 were subsequently treated in planetary ball mill for 30, 60, 90 and 120 minutes in air. The aim of this study was to examine phase composition, microstructure, and densification behavior of sintered specimens. After sintering in dilatometer at 1500 °C, the powder was converted to single phase MgAl2O4. The results show that mechanical activation improved the densification behavior of MgAl2O4 sintered …
Solar Concentrators Manufacture And Automation, Ernst Kussul, Tetyana Baydyk, Alberto Escalante Estrada, Maria Tersa Rodriguez Gonzalez, Donald C. Wunsch
Solar Concentrators Manufacture And Automation, Ernst Kussul, Tetyana Baydyk, Alberto Escalante Estrada, Maria Tersa Rodriguez Gonzalez, Donald C. Wunsch
Electrical and Computer Engineering Faculty Research & Creative Works
Solar energy is one of the most promising types of renewable energy. Flat facet solar concentrators were proposed to decrease the cost of materials needed for production. They used small flat mirrors for approximation of parabolic dish surface. The first prototype of flat facet solar concentrators was made in Australia in 1982. Later various prototypes of flat facet solar concentrators were proposed. It was shown that the cost of materials for these prototypes is much lower than the material cost of conventional parabolic dish solar concentrators. To obtain the overall low cost of flat facet concentrators it is necessary to …
Hydration Of Binary Portland Cement Blends Containing Silica Fume: A Decoupling Method To Estimate Degrees Of Hydration And Pozzolanic Reaction, Wenyu Liao, Xiao Sun, Aditya Kumar, Hongfang Sun, Hongyan Ma
Hydration Of Binary Portland Cement Blends Containing Silica Fume: A Decoupling Method To Estimate Degrees Of Hydration And Pozzolanic Reaction, Wenyu Liao, Xiao Sun, Aditya Kumar, Hongfang Sun, Hongyan Ma
Materials Science and Engineering Faculty Research & Creative Works
Determination of degrees of hydration/reaction of components of blended cementitious systems (i. e., cement and SCMs: supplementary cementitious materials) is essential to estimate the systems' properties. Although the best methods for determining degrees of reaction of different SCMs have been recommended by RILEM TC238, they rely on either expensive equipment (e.g., nuclear magnetic resonance) or time-consuming sample preparation and data processing (e.g., backscattered electron image analysis). Furthermore, these methods cannot simultaneously characterize degree of hydration of cement and degree of reaction of SCMs. A novel decoupling method, which can simultaneously estimate the degree of hydration of cement and the degree …
Geometric Effects Of Open Hollow Hydroxyapatite Microspheres Influence Bone Repair And Regeneration In Sprague Dawley Rats, Youqu Shen, M. N. Rahaman, Yongxian Liu, Yue-Wern Huang
Geometric Effects Of Open Hollow Hydroxyapatite Microspheres Influence Bone Repair And Regeneration In Sprague Dawley Rats, Youqu Shen, M. N. Rahaman, Yongxian Liu, Yue-Wern Huang
Materials Science and Engineering Faculty Research & Creative Works
Effective regeneration of bone defects caused by trauma or chronic diseases is a significant clinical challenge. Bone deficiency is overcome using treatments that rely on bone regeneration and augmentation. While various treatments have been investigated with encouraging results, complete and predictable bone reconstruction is often difficult [1]. Synthetic bone grafts have advantages such as consistent quality, safety, and good tissue tolerance. They usually function as inert or osteoconductive implants. Encouraging results from synthetic grafts have been reported. For instance, hollow hydroxyapatite (HA) microspheres showed the ability to facilitate bone repair in rats with non-healing calvarial defects [2,3]. However, new bone …
A Comprehensive Experimental And Modeling Study On Dissolution In Li-Ion Batteries, Yoon Koo Lee, Jonghyun Park, Wei Lu
A Comprehensive Experimental And Modeling Study On Dissolution In Li-Ion Batteries, Yoon Koo Lee, Jonghyun Park, Wei Lu
Mechanical and Aerospace Engineering Faculty Research & Creative Works
Dissolution is a critical challenge in metal oxide battery materials, which affects battery performance across multiple scales. At the particle level, the loss of active material as a result of dissolution directly results in capacity fade. At the electrode level, the re-deposition of dissolved metal ions onto the cathode increases cell polarization and hinders lithium transport. At the cell level, the dissolved ions further transport to and deposit on the anode, which consumes cycle-able lithium and leads to capacity fade. These processes lead to poor lithium reversibility, diffusivity, and conductivity. In this work, detailed experimental studies from the particle level …
Revisiting The Butler-Mokrys Model For The Vapor-Extraction Process, Vijitha Mohan, Partho Neogi, Baojun Bai
Revisiting The Butler-Mokrys Model For The Vapor-Extraction Process, Vijitha Mohan, Partho Neogi, Baojun Bai
Chemical and Biochemical Engineering Faculty Research & Creative Works
The dynamics of a process in which a solvent in the form of a vapor or gas is introduced in a heavy-oil reservoir is considered. The process is called the solvent vapor-extraction process (VAPEX). When the vapor dissolves in the oil, it reduces its viscosity, allowing oil to flow under gravity and be collected at the bottom producer well. The conservation-of-species equation is analyzed to obtain a more-appropriate equation that differentiates between the velocity within the oil and the velocity at the interface, which can be solved to obtain a concentration profile of the solvent in oil. We diverge from …
Modeling Land Subsidence Using Insar And Airborne Electromagnetic Data, Ryan G. Smith, R. Knight
Modeling Land Subsidence Using Insar And Airborne Electromagnetic Data, Ryan G. Smith, R. Knight
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Land subsidence as a result of groundwater overpumping in the San Joaquin Valley, California, is associated with the loss of groundwater storage and aquifer contamination. Although the physical processes governing land subsidence are well understood, building predictive models of subsidence is challenging because so much subsurface information is required to do so accurately. For the first time, we integrate airborne electromagnetic data, representing the subsurface, with subsidence data, mapped by interferometric synthetic aperture radar (InSAR), to model deformation. By combining both data sets, we are able to solve for hydrologic and geophysical properties of the subsurface to effectively model the …
Domain Adaption Via Feature Selection On Explicit Feature Map, Wan Yu Deng, Amaury Lendasse, Yew Soon Ong, Ivor Wai Hung Tsang, Lin Chen, Qing Hua Zheng
Domain Adaption Via Feature Selection On Explicit Feature Map, Wan Yu Deng, Amaury Lendasse, Yew Soon Ong, Ivor Wai Hung Tsang, Lin Chen, Qing Hua Zheng
Engineering Management and Systems Engineering Faculty Research & Creative Works
In Most Domain Adaption Approaches, All Features Are Used for Domain Adaption. However, Often, Not Every Feature is Beneficial for Domain Adaption. in Such Cases, Incorrectly Involving All Features Might Cause the Performance to Degrade. in Other Words, to Make the Model Trained on the Source Domain Work Well on the Target Domain, it is Desirable to Find Invariant Features for Domain Adaption Rather Than using All Features. However, Invariant Features Across Domains May Lie in a Higher Order Space, instead of in the Original Feature Space. Moreover, the Discriminative Ability of Some Invariant Features Such as Shared Background Information …
Scholars' Mine Quick Facts March 2019, Nancy S. Krost
Scholars' Mine Quick Facts March 2019, Nancy S. Krost
Scholars’ Mine Statistics
Scholars' Mine Quick Facts are monthly reports of downloads, page hits, and other information about works in the institutional repository of Missouri S&T. A map with downloads by region is also included.
Ivliyeva Named Cafe Assistant Chair, Missouri University Of Science And Technology
Ivliyeva Named Cafe Assistant Chair, Missouri University Of Science And Technology
CAFE Announcements
No abstract provided.
Biodegradable Composite Scaffold For Repairing Defects In Load-Bearing Bones, D. E. Day, Ali Mohammadkhah
Biodegradable Composite Scaffold For Repairing Defects In Load-Bearing Bones, D. E. Day, Ali Mohammadkhah
Materials Science and Engineering Faculty Research & Creative Works
A tissue scaffold for repair and regeneration of bone hard tissue or muscle, skin, or organ soft tissue, including load-bearing bone tissue, the scaffold comprising a core of biocompatible, biodegradable inorganic glass fibers; and a biocompatible, biodegradable, flexible polymer film surrounding the core and adhered to the core.
General Guides To Publish Well-Written Technical Papers, Jie Han
General Guides To Publish Well-Written Technical Papers, Jie Han
Invited Speakers
Technical papers are one of the important means to disseminate research results to the scientific and engineering community. They should be well written and make original contributions to the body of knowledge. Most technical papers are published after a peer-review process, which may be short or long, depending on many factors including the quality of technical contents, presentation, responses to review comments, and revisions. This webinar will first provide a brief overview of a typical publication process, key requirements for technical papers, and standards of acceptance and then focus on common issues in paper writing (including paper presentation) with general …
Design And Fabrication Of Automatic Single Axis Solar Tracker For Solar Panel, Ghazanfar Mehdi, Naveed Ali, Shafquat Hussain, Asad A. Zaidi, Ahmer Hussain Shah, M. Mustafa Azeem
Design And Fabrication Of Automatic Single Axis Solar Tracker For Solar Panel, Ghazanfar Mehdi, Naveed Ali, Shafquat Hussain, Asad A. Zaidi, Ahmer Hussain Shah, M. Mustafa Azeem
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Sun energy is a considered to be one of most promising sources to address the world energy crises. Photovoltaic cell is one of the prominent sources of energy. The most important factors that affect the efficiency of solar cells are cell temperature, maximum power point tracking (MPPT) and energy conversion efficiency. The optimization of these factors improves solar cells efficiency for more reliable applications. This study associated by means of the designing and manufacturing process of single axis tracker device by using photo voltaic conversion panels. This solar tracker system assures the conversion optimization of electricity from the source of …
Faculty Senate Minutes March 21, 2019, Missouri University Of Science And Technology Faculty Senate
Faculty Senate Minutes March 21, 2019, Missouri University Of Science And Technology Faculty Senate
Minutes & Agendas
No abstract provided.
3d Printed Zeolite Monoliths For Co₂ Removal, Fateme Rezaei, Harshul V. Thakkar
3d Printed Zeolite Monoliths For Co₂ Removal, Fateme Rezaei, Harshul V. Thakkar
Chemical and Biochemical Engineering Faculty Research & Creative Works
Carbon dioxide (CO2) capture materials comprising one or more 3D-printed zeolite monoliths for the capture and or removal of CO2 from air or gases in enclosed compartments, including gases or mixtures of gases having less than about 5% CO2. Methods for preparing 3D-printed zeolite monoliths useful as CO2 capture materials and filters, as well as methods of removing CO2 from a gas or mixture of gases in an enclosed compartment using 3D-printed zeolite monoliths are provided.
The Missouri Miner, March 13, 2019
Six Key Elements Of High Quality Technical Writing, Xianming Shi
Six Key Elements Of High Quality Technical Writing, Xianming Shi
Invited Speakers
What is the definition of “high quality”, when it comes to technical writing? What are the key elements that differentiate high-quality technical writing from the technical writing that is less effective in communicating the message? This webinar stems from the presenter’s observations and personal thoughts over the last decade or two, as an active researcher, a mentor, and a teacher in the engineering community. This webinar will be organized around six key elements or keywords identified by the presenter, i.e., innovation, engaging, hypothesis, logic, synthesis, and details.
Battery-Free Wireless Strain Measurement Using An Antenna Sensor, Yang Wang
Battery-Free Wireless Strain Measurement Using An Antenna Sensor, Yang Wang
INSPIRE Archived Webinars
A battery-free antenna sensor can wirelessly measure strain on a structure. Bonded to the surface of a base structure, the antenna sensor deforms when the structure is under strain, causing the antenna’s electromagnetic resonance frequency to change. This resonance frequency change can be wirelessly interrogated and recorded by a reader through electromagnetic backscattering. A radio frequency identification (RFID) chip on the sensor harnesses a small amount of energy from the interrogation signal and responds to the reader. The resonance frequency change identified by the reader is then used to determine the strain applied on the structure. The latest antenna sensor …
The Missouri Miner, March 6, 2019
Controlled Anchoring Of Iron Oxide Nanoparticles On Polymeric Nanofibers: Easy Access To Core@Shell Organic-Inorganic Nanocomposites For Magneto-Scaffolds, Hussein Awada, Assala Al Samad, Danielle Laurencin, Ryan Gilbert, Xavier Dumail, Ayman El Jundi, Audrey Bethry, Rebecca Pomrenke, Christopher Johnson, Laurent Lemaire, Florence Franconi, Gautier Félix, Joulia Larionova, Yannick Guari, Benjamin Nottelet
Controlled Anchoring Of Iron Oxide Nanoparticles On Polymeric Nanofibers: Easy Access To Core@Shell Organic-Inorganic Nanocomposites For Magneto-Scaffolds, Hussein Awada, Assala Al Samad, Danielle Laurencin, Ryan Gilbert, Xavier Dumail, Ayman El Jundi, Audrey Bethry, Rebecca Pomrenke, Christopher Johnson, Laurent Lemaire, Florence Franconi, Gautier Félix, Joulia Larionova, Yannick Guari, Benjamin Nottelet
Chemical and Biochemical Engineering Faculty Research & Creative Works
Composites combining superparamagnetic iron oxide nanoparticles (SPIONs) and polymers are largely present in modern (bio)materials. However, although SPIONs embedded in polymer matrices are classically reported, the mechanical and degradation properties of the polymer scaffold are impacted by the SPIONs. Therefore, the controlled anchoring of SPIONs onto polymer surfaces is still a major challenge. Herein, we propose an efficient strategy for the direct and uniform anchoring of SPIONs on the surface of functionalized-polylactide (PLA) nanofibers via a simple free ligand exchange procedure to design PLA@SPIONs core@shell nanocomposites. The resulting PLA@SPIONs hybrid biomaterials are characterized by electron microscopy (scanning electron microscopy and …
Ripple Canceling In Power Conversion Circuits, Pourya Shamsi, Mehdi Ferdowsi
Ripple Canceling In Power Conversion Circuits, Pourya Shamsi, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
A power circuit substantially canceling ripples at the source. The power circuit includes a switching circuit configured to control a power flow between an input and an output, a main storage element electrically connected in series with the switching circuit, and a resonant tank electrically coupled to the switching circuit and configured to compensate for switching ripples in the main storage element. Aspects of the invention can be applied to a converter circuit or to an inverter circuit.
Multi-Modality Empowered Network For Facial Action Unit Detection, Peng Liu, Zheng Zhang, Huiyuan Yang, Lijun Yin
Multi-Modality Empowered Network For Facial Action Unit Detection, Peng Liu, Zheng Zhang, Huiyuan Yang, Lijun Yin
Computer Science Faculty Research & Creative Works
This paper presents a new thermal empowered multi-task network (TEMT-Net) to improve facial action unit detection. Our primary goal is to leverage the situation that the training set has multi-modality data while the application scenario only has one modality. Thermal images are robust to illumination and face color. In the proposed multi-task framework, we utilize both modality data. Action unit detection and facial landmark detection are correlated tasks. To utilize the advantage and the correlation of different modalities and different tasks, we propose a novel thermal empowered multi-task deep neural network learning approach for action unit detection, facial landmark detection …
Missouri S&T Magazine Spring 2019, Missouri S&T Marketing And Communications Department, Miner Alumni Association
Missouri S&T Magazine Spring 2019, Missouri S&T Marketing And Communications Department, Miner Alumni Association
Missouri S&T Magazine
No abstract provided.
Seismicity Enhances Macrodispersion In Finite Porous And Fractured Domains: A Pore-Scale Perspective, Lizhi Zheng, Lichun Wang, Wen Deng
Seismicity Enhances Macrodispersion In Finite Porous And Fractured Domains: A Pore-Scale Perspective, Lizhi Zheng, Lichun Wang, Wen Deng
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Understanding the effects of oscillating flow field induced by seismicity on the transport process is vital for predicting the fate and transport of solute in many dynamic environments. However, there is prominent discrepancy in arguing with the response of dispersion to the oscillating flow field (i.e., the longitudinal dispersion coefficient would decrease, increase, or maintain unchanged). To unravel the underpinning physics about this controversial response, we simulated two-hundred twenty pore-scale numerical experiments for the seismicity-induced oscillating flow field and associated solute transport in the idealized finite porous (i.e., fluidic plate) and fractured (i.e., parallel plates) domains. The numerically obtained breakthrough …
Iq2s'19 - 10th International Workshop On Information Quality And Quality Of Service For Pervasive Computing - Welcome And Committees, Sajal K. Das
Computer Science Faculty Research & Creative Works
No abstract provided.
Smale Strategies For The $N$-Person Iterated Prisoner's Dilemma, Ethan Akin, Sławomir Plaskacz, Joanna Zwierzchowska
Smale Strategies For The $N$-Person Iterated Prisoner's Dilemma, Ethan Akin, Sławomir Plaskacz, Joanna Zwierzchowska
Mathematics and Statistics Faculty Research & Creative Works
Adapting methods introduced by Steven Smale, we describe good strategies for a symmetric version of the Iterated Prisoner's Dilemma with n players.
3,7-Dinitro-1,3,5,7-Tetraazabicyclo[3,3,1]Nonane (Dpt): An Important Intermediate In The Synthesis Route Of One Of The Most Powerful Energetic Materials (Rdx/Hmx), Hany A. Elazab, M. M. Seleet, Said M. A. Hassanein, M. A. Radwan, M. A. Sadek
3,7-Dinitro-1,3,5,7-Tetraazabicyclo[3,3,1]Nonane (Dpt): An Important Intermediate In The Synthesis Route Of One Of The Most Powerful Energetic Materials (Rdx/Hmx), Hany A. Elazab, M. M. Seleet, Said M. A. Hassanein, M. A. Radwan, M. A. Sadek
Chemical and Biochemical Engineering Faculty Research & Creative Works
Synthesis of Cyclotetramethylene Tetramine through the action of nitrating mixture formed of ammonium nitrate and fuming nitric acid on hexamine in presence of acetic acid, acetic anhydride and p-formaldehyde has been proven. The pathway is relatively long and Hexamine Dinitrate and Dinitro Pentamethylene Tetramine (DPT) are two of the main intermediate compounds. The former was prepared, purified, and then characterized. Conversion of this compound into the latter has been followed up experimentally. Herein, we report the Preparation of Dinitro Pentamethylene Tetramine (DPT) from Hexamine Dinitrate - as an alternative synthetic route - which is an important intermediate appears through preparation …
Flexural Behavior Of Hybrid Composite Beam (Hcb) Bridges, Mohamed A. Aboelseoud, John J. Myers
Flexural Behavior Of Hybrid Composite Beam (Hcb) Bridges, Mohamed A. Aboelseoud, John J. Myers
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
A new hybrid composite beam (HCB) has recently been used in the construction of three bridges in Missouri, USA. HCB consists of self-consolidating concrete (SCC) that is poured into classical arch shape and tied at the ends by steel tendons. Both the concrete and the steel are tucked inside a durable fiberglass shell, and the voids are filled with polyiso foam. This paper aims to examine the flexural behavior of an in-service HCB, evaluate the current methodology and assumptions, and propose modifications to that methodology. To achieve these goals, the strains induced in HCB elements due to different loading stages …
Probabilistic Seismic Demand Analysis Of A Bridge With Unbonded, Post-Tensioned, Concrete-Filled, Fiber-Reinforced Polymer Tube Columns, Manisha Rai, Mohamed Elgawady, Adrian Rodriguez-Marek
Probabilistic Seismic Demand Analysis Of A Bridge With Unbonded, Post-Tensioned, Concrete-Filled, Fiber-Reinforced Polymer Tube Columns, Manisha Rai, Mohamed Elgawady, Adrian Rodriguez-Marek
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Ground motions at sites close to a fault are sometimes affected by forward directivity, where the rupture energy arrives at the site in a form of a very short duration pulse. These pulses impose a heavy demand on structures located in the vicinity of the fault. In this research, a probabilistic seismic demand analysis (PSDA) for a self-centering bridge is carried out. The bridge columns consisted of unbonded, post-tensioned, concrete-filled, fiber-reinforced polymer tubes. A bridge model was developed and non-linear time history analyses were performed. Three different methodologies that used spectral accelerations to predict structural responses were used, and a …
Simulation Study Of 4h-Sic Trench Mosfets With Various Gate Structures, Jheng Yi Jiang, Chih Fang Huang, Tian Li Wu, Feng Zhao
Simulation Study Of 4h-Sic Trench Mosfets With Various Gate Structures, Jheng Yi Jiang, Chih Fang Huang, Tian Li Wu, Feng Zhao
Electrical and Computer Engineering Faculty Research & Creative Works
In this paper, we systematically study the effect of gate structures of a 4H-SiC UMOSFET on its performance, focusing on the fast-switching performance. Based on the simulation results, DC and AC characteristics of different gate structures are compared. It is found that a structure of UMOSFET, combining a grounded split-gate (SG), a trench bottom protection P+ shielding layer (PS) and a current spreading layer (CSL), yields the best compromise.