Digital Commons Network^™

Inelastic Response Evaluation Of Precast Composite Columns Under Seismic Loads, Mohanad M. Abdulazeez, Mohamed Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This paper presents a non-linear finite element analysis of large-scale hollow-core fiber-reinforced polymer-concrete-thin walled steel (HC-FCS) precast columns under reversed cyclic loading. The HC-FCS columns provide an economical and efficient alternative to conventional concrete bridge columns. The precast HC-FCS column consists of a concrete shell sandwiched between an outer fiber-reinforced polymer (FRP) tube and an inner thin-walled steel tube. The steel tube diameter-to thickness (D_i/t_s) ratio was 254. The proposed FEA model was developed using LS_DYNA multipurpose software and was verified by experimental results performed in this study. The FE model was used to investigate some …

A Web Page Classifier Library Based On Random Image Content Analysis Using Deep Learning, Leonardo Espinosa Leal, Amaury Lendasse, Kaj Mikael Björk, Anton Akusok

Engineering Management and Systems Engineering Faculty Research & Creative Works

In This Paper We Present a Methodology and the Corresponding Python Library1 for the Classification of Webpages. the Method Retrieves a Fixed Number of Images from a Given Webpage, and based on Them Classifies the Webpage into a Set of Established Classes with a Given Probability. the Library Trains a Random Forest Model Built Upon the Features Extracted from Images by a Pre-Trained Neural Network. the Implementation is Tested by Recognizing Weapon Class Webpages in a Curated List of 3859 Websites. the Results Show that the Best Method of Classifying a Webpage among the Classes of Interest is to Assign …

Kinetic Solvent Viscosity Effects As Probes For Studying The Mechanisms Of Enzyme Action, Giovanni Gadda, Pablo Sobrado

Chemistry Faculty Research & Creative Works

The study of enzyme reaction mechanisms is fundamentally important to our understanding of biochemistry, cellular metabolism, and drug development. This Perspective focuses on the use of kinetic solvent viscosity effects (KSVEs) to study enzyme reactions. This technique is easily implemented and uses steady-state kinetic analyses to probe whether substrate binding is diffusion-controlled and whether product release is the rate-limiting step in the catalytic cycle. In addition, KSVEs can identify isomerization steps that are important for catalysis. The use of KSVEs in combination with other techniques, such as kinetic isotope effects, pH effects, and site-directed mutagenesis, can provide a detailed view …

Synthesis Of Cr, Cu, Ni, And Y-Doped 3d-Printed Zsm-5 Monoliths And Their Catalytic Performance For N-Hexane Cracking, Xin Li, Abdo Alslam Alwakwak, Fateme Rezaei, Ali A. Rownaghi

Chemical and Biochemical Engineering Faculty Research & Creative Works

In this work, chromium, copper, nickel, and yttrium-doped 3D-printed ZSM-5 monoliths were synthesized by doping the ZSM-5 zeolite paste with corresponding metal precursors. The physical and acid properties of the metal-doped 3D-printed ZSM-5 monoliths were systematically characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), Fourier transform-infrared (FT-IR), N₂ adsorption, temperature programmed reduction of H₂(H₂-TPR), and temperature-programmed desorption of ammonia (NH₃-TPD) techniques. The characterization of bare and metal-doped monoliths confirmed the presence of metal promoters within the zeolite matrix while their MFI frameworks were retained after doping and printing. It …

A Novel Hybrid 2d/Q-2d Finite Element Method For Power/Ground Plane Analysis, Ping Li, Li (Lijun) Jun Jiang, Hakan Bagci

Electrical and Computer Engineering Faculty Research & Creative Works

By realizing the TMz modal distribution property between the power/ground plate-pairs, the magnetic field actually has only azimuthal components while longitude component is zero. Thus, if the magnetic field wave equation is solved, only a Quasi-2D issue is considered. Furthermore, since the high-order modes are only located in the near region of the anti-pad, thus for the domain far-away from the antipad has only the TEM mode. Thereby, in this region, the magnetic field is invariable along the vertical direction, which consequently is a pure 2D domain. As a result, the conventional 3D computational domain is naturally transformed to a …

Climbing Robots For Steel Bridge Inspection And Evaluation, Hung La

INSPIRE Archived Webinars

Steel structures and steel bridges, constituting a major part in civil infrastructure, require adequate maintenance and health monitoring. In the U.S., more than 50,000 steel bridges are either deficient or functionally obsolete, which likely presents a growing threat to people's safety. The collapse of numerous bridges recorded over the past 16 years has shown significant impact on the safety of all travelers.

In this presentation, the design and implementation of two different climbing robots for steel structure inspection are reported. Based on the magnetic wheel design, the robot can climb on different steel surface structures (i.e., flat, cylinder, cube). The …

Evaluating Classroom-Based, Online, Blended And Laboratory Teaching Interactions, University Of Missouri Intercampus Faculty Council

Campus Resources for Faculty

No abstract provided.

Gap Analysis On Faculty Development At Missouri University Of Science And Technology, Center For Advancing Faculty Excellence

Campus Resources for Faculty

The most critical element in the first year of the Center for Advancing Faculty Excellence (CAFE) has been the completion of a gap analysis regarding campus support of faculty development. What has Missouri S&T done well and where has the campus fallen short? What should CAFE do to enhance the performance of faculty?

This report, a response to those questions, is based largely upon 80 interviews. Thirty-one of the interviews were with those who assess faculty performance, ranging from University of Missouri President Mun Choi, Missouri S&T Interim Chancellor Chris Maples, and Provost Robert Marley down through deans, associate deans, …

Laser Vaporization And Controlled Condensation (Lvcc) Of Graphene Supported Pd/Fe3o4 Nanoparticles As An Efficient Magnetic Catalysts For Suzuki Cross – Coupling, Hany A. Elazab

Chemical and Biochemical Engineering Faculty Research & Creative Works

Herein, a reproducible, reliable, and efficient method was reported for the synthesis of palladium nanoparticles dispersed on a composite of Fe₃O₄ and graphene (Pd-Fe₃O₄/G) as a highly efficient active catalyst for being used in Suzuki cross–coupling reactions. Graphene supported Pd/Fe₃O₄ nanoparticles (Pd-Fe₃O₄/G) exhibit a remarkable catalytic performance towards Suzuki coupling reactions. Moreover, the prepared catalyst could be recycled for up to three times with high catalytic activity. The catalyst was prepared using LVCC synthesis; the prepared catalyst is highly magnetic which provides a platform to facilitate …

The Catalytic Activity Of Copper Oxide Nanoparticles Towards Carbon Monoxide Oxidation Catalysis: Microwave – Assisted Synthesis Approach, Hany A. Elazab

Chemical and Biochemical Engineering Faculty Research & Creative Works

In this research, we report a simple, versatile, and reproducible method for the synthesis of copper oxide nanoparticles via microwave assisted synthesis approach. The important advantage of this catalyst is due to its important role not only in the low temperature oxidation of CO but also in potential applications in pharmaceutical and fine chemical synthesis. The results reveal that the copper oxide catalyst has particularly a remarkable high activity for CO oxidation catalysis as it was found that copper oxide (CuO) catalyst has 100% conversion of carbon monoxide into carbon dioxide at 175 oC. This also could be attributed to …

Faculty Senate Minutes Jun. 14, 2018, Missouri University Of Science And Technology Faculty Senate

Minutes & Agendas

No abstract provided.

Joining Metallurgically Incompatible Metals, Wei Li, Frank W. Liou

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A method for joining a second alloy material to a first alloy material where the two alloy materials are incompatible, comprising forming three successive interface layers over a substrate comprising the first alloy material, followed by forming a structure of the second alloy material over the interface layers, wherein the composition and deposition method for each of the layers is selected so that brittle intermetallics are not formed between elements of the adjacent layer compositions.

Flexible To Rigid Nanoporous Polyurethane-Acrylate (Puac) Type Materials For Structural And Thermal Insulation Applications, Nicholas Leventis, Chariklia Sotiriou-Leventis, Abhishek Bang

Chemistry Faculty Research & Creative Works

Novel urethane-acrylate (UAC) Star monomers and polyurethane-acrylate (PUAC) aerogel polymers derived therefrom are described herein, along with other novel, related monomers and polymers. Also described herein are processes for preparing the UAC Star monomers, the PUAC aerogel polymers, and the other related monomers and polymers. The PUAC and related polymers herein are useful in various applications including in structural and thermal insulation.

High Efficiency, High Performance Metal-Organic Framework (Mof) Membranes In Hollow Fibers And Tubular Modules, Sankar Nair, Kiwon Eum, Christopher W. Jones, Ali A. Rownaghi

Chemical and Biochemical Engineering Faculty Research & Creative Works

A reactor cell for measuring gas and liquid permeation is disclosed. A hollow fiber is supported by and sealed into a first hole and a second hole of the reactor module. The first and second ends of the hollow fiber are sealed with a sealing solution. Methods for making and using the reactor cell are also disclosed. As made and used, the reactor cell further comprises a molecular sieving membrane that is uniform and free of defects grown on an inner bore surface of the hollow fiber.

Improving Performance Of Iterative Methods By Lossy Checkponting, Dingwen Tao, Sheng Di, Xin Liang, Zizhong Chen, Franck Cappello

Computer Science Faculty Research & Creative Works

Iterative methods are commonly used approaches to solve large, sparse linear systems, which are fundamental operations for many modern scientific simulations. When the large-scale iterative methods are running with a large number of ranks in parallel, they have to checkpoint the dynamic variables periodically in case of unavoidable fail-stop errors, requiring fast I/O systems and large storage space. To this end, significantly reducing the checkpointing overhead is critical to improving the overall performance of iterative methods. Our contribution is fourfold. (1) We propose a novel lossy checkpointing scheme that can significantly improve the checkpointing performance of iterative methods by leveraging …

Message From The Program Chairs - Volume 1, Jiannong Cao, Stelvio Cimato, Yasuo Okabe, Sahra Sedighsarvestani

Electrical and Computer Engineering Faculty Research & Creative Works

No abstract provided.

Performance Of Carbon Aerogel/Fiber Paper As Capacitive Deionization Electrodes Under Variable Operating Conditions, Md Ashique Ahmed, Sanjay Tewari

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The capacitive deionization has garnered renewed interested with recent modifications resulting in efficient (energy and cost) alternatives to desalinate brackish water (salt concentration less than 10 g/L). Recent research efforts, to improve the technology, have been focused mainly on electrode material development and modifications of operational parameters for optimized performance. This research is focused on performance evaluation of carbon aerogel/fiber paper as capacitive deionization electrodes under variable operating conditions. The main operational parameters that were varied are applied voltage, influent temperature and initial concentration. The highest adsorption capacity achieved in this on-going study is 4.61 mg/g at 33.5 oC with …

Evolution Of Structure And Superconductivity In Ba(Ni₁₋ₓcoₓ)₂As₂, Chris Eckberg, Limin Wang, Halyna Hodovanets, Hyunsoo Kim, Daniel J. Campbell, Peter Zavalij, Philip Piccoli, Johnpierre Paglione

Physics Faculty Research & Creative Works

The effects of Co substitution on Ba(Ni_1-xCo_x)₂As₂ (0 ≤ x ≤ 0.251) single crystals grown out of Pb flux are investigated via transport, magnetic, and thermodynamic measurements. BaNi₂As₂ exhibits a first-order tetragonal to triclinic structural phase transition at T_s = 137 K upon cooling, and enters a superconducting phase below T_c = 0.7 K. The structural phase transition is sensitive to cobalt content and is suppressed completely by x ≥ 0.133. The superconducting critical temperature, T_c, increases continuously with x, reaching a maximum of T_{c …}

Modeling And Simulation Of Mass Flow Of Steel Plate/Slab During Hot Rolling, X. Wang, S. Ganguly, K. Chandrashekhara, Mario F. Buchely, Semen Naumovich Lekakh, David C. Van Aken, Ronald J. O'Malley, D. Bai, Y. Wang, T. Natarajan

Mechanical and Aerospace Engineering Faculty Research & Creative Works

The ability to predict mass flow behavior during hot rolling is essential to product quality. In this study, viscoplastic models of the steels from SSAB and U.S. Steel were developed based on experimental stress-strain curves. A three-dimensional nonlinear finite element model was built to simulate a reverse plate hot rolling and a hot strip rolling process. For plate rolling, a seven pass schedule was simulated. The plastic strain distributions during rolling were investigated. The results show that the surface of the plate has larger plastic strain than the center. In the case of hot strip rolling, the simulation predicts that …

Identity-Adaptive Facial Expression Recognition Through Expression Regeneration Using Conditional Generative Adversarial Networks, Huiyuan Yang, Zheng Zhang, Lijun Yin

Computer Science Faculty Research & Creative Works

Subject variation is a challenging issue for facial expression recognition, especially when handling unseen subjects with small-scale labeled facial expression databases. Although transfer learning has been widely used to tackle the problem, the performance degrades on new data. In this paper, we present a novel approach (so-called IA-gen) to alleviate the issue of subject variations by regenerating expressions from any input facial images. First of all, we train conditional generative models to generate six prototypic facial expressions from any given query face image while keeping the identity related information unchanged. Generative Adversarial Networks are employed to train the conditional generative …

Influence Of Silica Nanoparticle Density And Flow Conditions On Sedimentation, Cell Uptake, And Cytotoxicity, Mostafa Yazdimamaghani, Zachary B. Barber, Seyyed Pouya Hadipour Moghaddam, Hamidreza Ghandehari

Chemical and Biochemical Engineering Faculty Research & Creative Works

Careful evaluation of the toxicological response of engineered nanomaterials (ENMs) as a function of physicochemical properties can aid in the design of safe platforms for biomedical applications including drug delivery. Typically, in vitro ENM cytotoxicity assessments are performed under conventional static cell culture conditions. However, such conditions do not take into account the sedimentation rate of ENMs. Herein, we synthesized four types of similar size silica nanoparticles (SNPs) with modified surface roughness, charge, and density and characterized their cytotoxicity under static and dynamic conditions. Influence of particle density on sedimentation and diffusion velocities were studied by comparing solid dense silica …

The Zinc Transporter Zipt-7.1 Regulates Sperm Activation In Nematodes, Yanmei Zhao, Chieh Hsiang Tan, Amber Krauchunas, Andrea Scharf, Nicholas Dietrich, Kurt Warnhoff, Zhiheng Yuan, Marina Druzhinina, Sam Guoping Gu, Long Miao, Andrew Singson, Ronald E. Ellis, Kerry Kornfeld

Biological Sciences Faculty Research & Creative Works

Sperm activation is a fascinating example of cell differentiation, in which immotile spermatids undergo a rapid and dramatic transition to become mature, motile sperm. Because the sperm nucleus is transcriptionally silent, this transition does not involve transcriptional changes. Although Caenorhabditis elegans is a leading model for studies of sperm activation, the mechanisms by which signaling pathways induce this transformation remain poorly characterized. Here we show that a conserved transmembrane zinc transporter, ZIPT-7.1, regulates the induction of sperm activation in Caenorhabditis nematodes. The zipt-7.1 mutant hermaphrodites cannot self-fertilize, and males reproduce poorly, because mutant spermatids are defective in responding to activating …

Ccfss Special Edition Technical Bulletin Summer 2018, Wei-Wen Yu Center For Cold-Formed Steel Structures

CCFSS Technical Bulletins (1993 - 2020)

No abstract provided.

Scholars' Mine Quick Facts June 2018, 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.

Review Of The Book "Deposition, 1940-1944: A Secret Diary Of Life In Vichy France," By Léon Werth (David Ball, Ed. And Trans.), Shannon Lee Fogg

History and Political Science Faculty Research & Creative Works

No abstract provided.

Leveraging The Nam's 'Getting Nurses On Boards Coalition' To Promote Nae's 'Changing The Conversation' Campaign, Daniel B. Oerther

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

As described in reports by the National Academy of Engineering (NAE), engineers and the profession of engineering lack visibility, relevance, and influence with the public. One approach to address this situation is the, "Changing the Conversation," campaign that uses market research techniques to improve the public image of the engineering profession. In related efforts, scientists have developed the, "March for Science," campaign to advocate for the role of science in evidence-based public policy at the local, state, and international levels. In contrast to marketing materials and advocacy campaigns, this article argues that the approach adopted by nurses and the profession …

Generating Interest Among Undergraduates Toward Research In Environmental Engineering By Incorporating Novel Desalination Technology-Based Hands-On Laboratory Assignments, Sanjay Tewari, Md Ashique Ahmed, Chandra Mouli Tummala

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Undergraduate students were exposed to hands-on novel desalination laboratory experiments in an attempt to generate interest towards research in the broad field of environmental engineering and specifically in the field of water desalination. The laboratory exercises were designed to introduce desalination techniques, enhance their learning experiences, generate interest among them, and prepare them as potential researchers in laboratory settings. The hands-on experience of capacitive deionization (CDI) based laboratory experiments provided foundational and working knowledge of the CDI concept and allowed students to learn basic methodology followed in environmental laboratories to arrive at technical conclusions.

Students were given opportunity to desalinate …

Science, Technology, Engineering, Art, And Math (Steam) Diplomacy: Preliminary Results From An Initial Pilot Course, Daniel B. Oerther

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A new course, "Science, Technology, Engineering, Art, and Math (STEAM) Diplomacy," has been developed at the Missouri University of Science and Technology to introduce engineering students to the field of foreign relations and the tripartite objectives of: 1) science in diplomacy; 2) science for diplomacy; and 3) diplomacy for science. The course employs an available scholarly monograph as a text and integrates materials created by the Center for Science Diplomacy of the American Association for the Advancement of Science (AAAS) as well as publically available materials. The new course employs a previously reported format including blended delivery, a flipped classroom, …

Multi-Auv Cooperative Target Hunting Based On Improved Potential Field In A Surface-Water Environment, Hengqing Ge, Guibin Chen, Guang Xu

Mining Engineering Faculty Research & Creative Works

In this paper, target hunting aims to detect target and surround the detected target in a surface-water using Multiple Autonomous Underwater Vehicles (multi-AUV) in a given area. The main challenge in multi-AUV target hunting is the design of AUV's motion path and coordination mechanism. To conduct the cooperative target hunting by multi-AUV in a surface-water environment, an integrated algorithm based on improved potential field (IPF) is proposed. First, a potential field function is established according to the information of the surface-water environment. Then, the dispersion degree, the homodromous degree, and district-difference degree are introduced to increase the cooperation of the …

Russian Zoophonic Verbs Modifications' Domain. Peculiarity Of Synthesis, Irina V. Ivliyeva

Arts, Languages and Philosophy Faculty Research & Creative Works

The article examines capabilities of Russian zoophonic verbs (those describing sounds produced by animals) to create semantic modifications. Using the appending inventory of zoophonic verbal modifications from novel sources, previously unused in lexicographic practices, the open (infinite) nature of semantic modifications' domain, its composition and the fluidity of its lacuna zones are shown. The structure of zoophonic verbal modifications is examined; verbal modifiers, non-typical for this lexical-semantic group of verbs, are inventoried. The obstacles to successful production of semantically modified derivatives during different stages of synthesis are classified by several criteria: denotative, semantic, and distributive. The research findings demonstrate the …