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Articles 12001 - 12030 of 33650
Full-Text Articles in Entire DC Network
Generalized Modal Expansion Of Electromagnetic Field In 2-D Bounded And Unbounded Media, Qi I. Dai, Weng Cho Chew, Yat Hei Lo, Yang G. Liu, Li (Lijun) Jun Jiang
Generalized Modal Expansion Of Electromagnetic Field In 2-D Bounded And Unbounded Media, Qi I. Dai, Weng Cho Chew, Yat Hei Lo, Yang G. Liu, Li (Lijun) Jun Jiang
Electrical and Computer Engineering Faculty Research & Creative Works
A generalized modal expansion theory is presented to investigate and illustrate the physics of wave-matter interaction within arbitrary two-dimensional (2-D) bounded and unbounded electromagnetic problems. We start with the bounded case where the field excited by any sources is expanded with a complete set of biorthogonal eigenmodes. In regard to non-Hermitian or nonreciprocal problems, an auxiliary system is constructed to seek for the modal-expansion solution. We arrive at the unbounded case when the boundary tends to infinity or is replaced by the perfectly matched layer (PML). Modes are approximately categorized into two types: trapped modes and radiation modes, which respond …
A New Green's Function Formulation For Modeling Homogeneous Objects In Layered Medium, Yongpin P. Chen, Weng Cho Chew, Lijun Jiang
A New Green's Function Formulation For Modeling Homogeneous Objects In Layered Medium, Yongpin P. Chen, Weng Cho Chew, Lijun Jiang
Electrical and Computer Engineering Faculty Research & Creative Works
A new Green's function formulation is developed systematically for modeling general homogeneous (dielectric or magnetic) objects in a layered medium. The dyadic form of the Green's function is first derived based on the pilot vector potential approach. The matrix representation in the moment method implementation is then derived by applying integration by parts and vector identities. The line integral issue in the matrix representation is investigated, based on the continuity property of the propagation factor and the consistency of the primary term and the secondary term. The extinction theorem is then revisited in the inhomogeneous background and a surface integral …
The Missouri Miner, October 11, 2012
The Missouri Miner, October 11, 2012
The Missouri Miner Newspaper
No abstract provided.
Identification Of Faction Groups And Leaders In Web-Based Intelligent Argumentation System For Collaborative Decision Support, Ravi Santosh Arvapally, Xiaoqing Liu, Wei Jiang
Identification Of Faction Groups And Leaders In Web-Based Intelligent Argumentation System For Collaborative Decision Support, Ravi Santosh Arvapally, Xiaoqing Liu, Wei Jiang
Computer Science Faculty Research & Creative Works
Argumentation is an important and critical process in a collaborative decision-making environment. Several argumentation frameworks and systems have been proposed for collaborative decision making earlier. However, limited decision support is provided to stakeholders. in an argumentation process, stakeholders tend to form groups, called faction groups based on their opinions and exchange of arguments. Each faction group is usually led by a faction leader in the group. Identification of faction groups and leaders in argumentation becomes an important challenge which has not been addressed adequately in the past. the faction assessment in argumentation provides the decision maker with more information about …
An Exponential Moving Average Algorithm, David Haynes, Steven Corns, Ganesh Kumar Venayagamoorthy
An Exponential Moving Average Algorithm, David Haynes, Steven Corns, Ganesh Kumar Venayagamoorthy
Engineering Management and Systems Engineering Faculty Research & Creative Works
Techniques to reduce the search space when an optimizer seeks an optimal value are studied in this paper. a new mutation technique called the "Exponential Moving Average" algorithm (EMA) is introduced. the performance of EMA algorithms is compared to two other similar Computational Intelligence (CI) algorithms (an ordinary Evolutionary Algorithm (EA) and a "Mean-Variance Optimization" (MVO)) to solve a multi-dimensional problem which has a large search space. the classic Sudoku puzzle is chosen as the problem with a large search space. © 2012 IEEE.
A Comparison Of Representations For The Prediction Of Ground-Level Ozone Concentration, Benjamin Daniels, Steven Corns, Elizabeth Cudney
A Comparison Of Representations For The Prediction Of Ground-Level Ozone Concentration, Benjamin Daniels, Steven Corns, Elizabeth Cudney
Engineering Management and Systems Engineering Faculty Research & Creative Works
This work presents a comparison of methods to predict ground-level ozone to highlight differences in the ability of the algorithms and to compare their performance to an established signal to noise-based prediction method. Existing data related to weather conditions and ground-level ozone was divided into a training set and a test set. Three algorithms were trained using the training set to create predictors, which were then analyzed with the test set, and then compared to the Taguchi Method to determine performance. It was found that the newly introduced R-LCS performed well on this problem, predictors using the Taguchi method had …
The Missouri Miner, October 4, 2012
The Missouri Miner, October 4, 2012
The Missouri Miner Newspaper
No abstract provided.
Infrared And Intertial Tracking In The Immersive Audio Environment For Enhanced Military Training, Pratik Shah, Ayman Faza, Raghavendra Nimmala, Steven Grant, William Chapin, Robert Montgomery
Infrared And Intertial Tracking In The Immersive Audio Environment For Enhanced Military Training, Pratik Shah, Ayman Faza, Raghavendra Nimmala, Steven Grant, William Chapin, Robert Montgomery
Psychological Science Faculty Research & Creative Works
The Immersive Audio Environment (IAE) was designed to provide an effective military training facility. It's efficacy at synthesizing sounds from desired directions and also the ability to synthesize moving sounds has been previously reported. This paper discusses the addition of a tracking system to evaluate subject training performance. Numerous tracking systems have been developed for tracking in immersive environments. Some examples include using head mounted web cams, visible light cameras mounted on the support structure, or even single camera tracking as in commercially available entertainment. Our system uses a combination of an existing infrared tracking system and a specially designed …
A Brokerage-Based Approach For Cloud Service Selection, Smitha Sundareswaran, Anna Squicciarini, Dan Lin
A Brokerage-Based Approach For Cloud Service Selection, Smitha Sundareswaran, Anna Squicciarini, Dan Lin
Computer Science Faculty Research & Creative Works
great opportunities for consumers to find the best service and best pricing, which however raises new challenges on how to select the best service out of the huge pool. It is time-consuming for consumers to collect the necessary information and analyze all service providers to make the decision. This is also a highly demanding task from a computational perspective, because the same computations may be conducted repeatedly by multiple consumers who have similar requirements. Therefore, in this paper, we propose a novel brokerage-Based architecture in the Cloud, where the Cloud brokers is responsible for the service selection. in particular, we …
Iqgap Family Members In Yeast, Dictyostelium, And Mammalian Cells, Katie Shannon
Iqgap Family Members In Yeast, Dictyostelium, And Mammalian Cells, Katie Shannon
Biological Sciences Faculty Research & Creative Works
IQGAPs are a family of scaffolding proteins with multiple domains, named for the IQ motifs and GTPase activating protein (GAP) related domains. Despite their GAP homology, IQGAP proteins act as effectors for GTP-bound GTPases of the Ras superfamily and do not stimulate GTP hydrolysis. IQGAPs are found in eukaryotic cells from yeast to human, and localize to actin-containing structures such as lamellipodia, membrane ruffles, cell-cell adhesions, phagocytic cups, and the actomyosin ring formed during cytokinesis. Mammalian IQGAPs also act as scaffolds for signaling pathways. IQGAPs perform their myriad functions through association with a large number of proteins including filamentous actin …
Random Fields At A Nonequilibrium Phase Transition, Hatem Barghathi, Thomas Vojta
Random Fields At A Nonequilibrium Phase Transition, Hatem Barghathi, Thomas Vojta
Physics Faculty Research & Creative Works
We study nonequilibrium phase transitions in the presence of disorder that locally breaks the symmetry between two equivalent macroscopic states. In low-dimensional equilibrium systems, such random-field disorder is known to have dramatic effects: it prevents spontaneous symmetry breaking and completely destroys the phase transition. In contrast, we show that the phase transition of the one-dimensional generalized contact process persists in the presence of random-field disorder. The ultraslow dynamics in the symmetry-broken phase is described by a Sinai walk of the domain walls between two different absorbing states. We discuss the generality and limitations of our theory, and we illustrate our …
Search For Gravitational Waves Associated With Gamma-Ray Bursts During Ligo Science Run 6 And Virgo Science Runs 2 And 3, J. Abadie, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.
Search For Gravitational Waves Associated With Gamma-Ray Bursts During Ligo Science Run 6 And Virgo Science Runs 2 And 3, J. Abadie, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.
Physics Faculty Research & Creative Works
We present the results of a search for gravitational waves associated with 154 gamma-ray bursts (GRBs) that were detected by satellite-based gamma-ray experiments in 2009-2010, during the sixth LIGO science run and the second and third Virgo science runs. We perform two distinct searches: a modeled search for coalescences of either two neutron stars or a neutron star and black hole, and a search for generic, unmodeled gravitational-wave bursts. We find no evidence for gravitational-wave counterparts, either with any individual GRB in this sample or with the population as a whole. For all GRBs we place lower bounds on the …
The Bridge Newsletter Winter 2012, Missouri University Of Science And Technology
The Bridge Newsletter Winter 2012, Missouri University Of Science And Technology
The Bridge Newsletter
-Creating bridge beams that will last 100 years
-Great school, great price
-Recruiting technical minds
-Combatting obesity, diabetes
Fabrication Of Ph- Or Temperature-Responsive Single Wall Carbon Nanotubes Via A Graft From Photopolymerization, Pu Zhang, David B. Henthorn
Fabrication Of Ph- Or Temperature-Responsive Single Wall Carbon Nanotubes Via A Graft From Photopolymerization, Pu Zhang, David B. Henthorn
Chemical and Biochemical Engineering Faculty Research & Creative Works
An ultraviolet light initiated "graft from" polymerization method to fabricate polymer-functionalized single wall carbon nanotubes (SWNTs) with pendant pH- and temperature-responsive polymer chains is utilized. the attached polymer chains, formed from methacrylic acid and poly (ethylene glycol) methyl ether methacrylate monomers, are well established for its pH-responsive swelling/deswelling behavior. This special property was utilized here to control the aqueous dispersibility of the carbon nanotubes. Furthermore, poly(N-isopropylacrylamide), a temperature-responsive polymer, was utilized in the fabrication of SWNTs whose dispersibility was dependent on solution temperature. the morphology of the polymer-functionalized carbon nanotubes was characterized by scanning electron microscopy (SEM) before and after …
Microwave And Millimeter-Wave Sensors, Systems, And Techniques For Electromagnetic Imaging And Materials Characterization, Andrea Randazzo, Kristen M. Donnell, Yeousong Lee
Microwave And Millimeter-Wave Sensors, Systems, And Techniques For Electromagnetic Imaging And Materials Characterization, Andrea Randazzo, Kristen M. Donnell, Yeousong Lee
Electrical and Computer Engineering Faculty Research & Creative Works
No abstract provided.
Understanding Information And Knowledge Sharing In Online Communities: Emerging Research Approaches, Hsin-Liang Chen, Anatoliy Gruzd, Xiaozhong Liu, Eric Meyers
Understanding Information And Knowledge Sharing In Online Communities: Emerging Research Approaches, Hsin-Liang Chen, Anatoliy Gruzd, Xiaozhong Liu, Eric Meyers
University Libraries Faculty Research & Creative Works
Social media have become an important component of contemporary information ecosystems. People use social media systems, such as Twitter, Facebook, YouTube, and Tumblr to communicate ideas and information needs, seek advice and solve problems, show appreciation and disagreement with a person or issue. These tools facilitate the emergence of communities, often resembling the communities of practice that arise in workplaces and educational institutions, where a common interest, identity and set of norms and structures for communicating develop through interaction. But while it seems easy to "suck in" data streams from social media to understand online communities, making sense of the …
Stress Corrosion Cracking Susceptibility Of Ultrafine Grained Az31, G. R. Argade, W. Yuan, K. Kandasamy, R. S. Mishra
Stress Corrosion Cracking Susceptibility Of Ultrafine Grained Az31, G. R. Argade, W. Yuan, K. Kandasamy, R. S. Mishra
Materials Science and Engineering Faculty Research & Creative Works
In this study, stress corrosion cracking (SCC) behavior of AZ31 magnesium alloy was carried out using slow strain rate testing (SSRT) technique in 3.5 wt.% NaCl solution. the influence of microstructural scale on the stress corrosion behavior was investigated in AZ31 alloy with three different mean grain sizes. Single-pass and two-pass friction stir processing (FSP) was employed to obtain fine grain and ultrafine grain microstructures, respectively. for FSP, SSRT specimens were extracted from the processed region. SSRTs were carried out in air and solution at an initial strain rate of 10 -6/s. a significant decrease in the ultimate tensile strength …
Specification For The Design, Testing, And Utilization Of Industrial Steel Storage Racks, Rack Manufacturers Institute
Specification For The Design, Testing, And Utilization Of Industrial Steel Storage Racks, Rack Manufacturers Institute
Rack Manufacturers Institute (RMI) Specifications and Manuals (1984 - 2012)
The standard applies to industrial pallet racks, movable shelf racks, and stacker racks made of cold-formed or hot-rolled steel structural members. It does not apply to other types of racks, such as drive-in or drive-through racks, cantilever racks, portable racks, etc. or to racks made of material other than steel.
Personality As A Source Of Individual Differences In Cognition Among Older African Americans, Adrienne T. Aiken-Morgan, Jacqueline Michelle Bichsel, Jason C. Allaire, Jyoti Savla, Christopher L. Edwards, Keith E. Whitfield
Personality As A Source Of Individual Differences In Cognition Among Older African Americans, Adrienne T. Aiken-Morgan, Jacqueline Michelle Bichsel, Jason C. Allaire, Jyoti Savla, Christopher L. Edwards, Keith E. Whitfield
Psychological Science Faculty Research & Creative Works
Previous research suggests that demographic factors are important correlates of cognitive functioning in African Americans; however, less attention has been given to the influence of personality. the present study explored how dimensions and facets of personality predicted individual variability in cognition in a sample of older African Americans from the Baltimore Study of Black Aging. Cognition was assessed by verbal learning and attention/working memory measures. Personality was measured by the NEO Personality Inventory-Revised. Linear regressions controlling for demographic factors showed that Neuroticism, Openness, and Agreeableness were significant regression predictors of cognitive performance. Individual facets of all five personality dimensions were …
The Missouri Miner, September 27, 2012
The Missouri Miner, September 27, 2012
The Missouri Miner Newspaper
No abstract provided.
On Secrecy Rate Analysis Of Mimo Wiretap Channels Driven By Finite-Alphabet Input, Shafi Bashar, Zhi Ding, Chengshan Xiao
On Secrecy Rate Analysis Of Mimo Wiretap Channels Driven By Finite-Alphabet Input, Shafi Bashar, Zhi Ding, Chengshan Xiao
Electrical and Computer Engineering Faculty Research & Creative Works
This work investigates the effect of finite-alphabet input constraint on the secrecy rate of a multi-antenna wiretap channel. Most existing works have characterized maximum achievable secrecy rate or secrecy capacity for single and multiple antenna systems based on Gaussian source signals and secrecy code. for practical considerations, we study the effect of finite discrete-constellation on the achievable secrecy rate of multiple-antenna wire-tap channels. Our proposed precoding scheme converts the underlying multi-antenna system into a bank of parallel channels. based on this precoding strategy, we develop a decentralized power allocation algorithm based on dual decomposition to maximize the achievable secrecy rate. …
Location-Aware Collaborative Filtering For Qos-Based Service Recommendation, Mingdong Tang, Yechun Jiang, Jianxun Liu, Xiaoqing Liu
Location-Aware Collaborative Filtering For Qos-Based Service Recommendation, Mingdong Tang, Yechun Jiang, Jianxun Liu, Xiaoqing Liu
Computer Science Faculty Research & Creative Works
Collaborative filtering is one of widely used Web service recommendation techniques. in QoS-Based Web service recommendation, predicting missing QoS values of services is often required. There have been several methods of Web service recommendation based on collaborative filtering, but seldom have they considered locations of both users and services in predicting QoS values of Web services. Actually, locations of users or services do have remarkable impacts on values of QoS factors, such as response time, throughput, and reliability. in this paper, we propose a method of location-aware collaborative filtering to recommend Web services to users by incorporating locations of both …
Awsr: Active Web Service Recommendation Based On Usage History, Guosheng Kang, Jianxun Liu, Mingdong Tang, Xiaoqing Liu, Buqing Cao, Yu Xu
Awsr: Active Web Service Recommendation Based On Usage History, Guosheng Kang, Jianxun Liu, Mingdong Tang, Xiaoqing Liu, Buqing Cao, Yu Xu
Computer Science Faculty Research & Creative Works
Web services are very prevalent nowadays. Recommending Web services that users are interested in becomes an interesting and challenging research problem. in this paper, we present AWSR (Active Web Service Recommendation), an effective Web service recommendation system based on users' usage history to actively recommend Web services to users. AWSR extracts user's functional interests and QoS preferences from his/her usage history. Similarity between user's functional interests and a candidate Web service is calculated first. a hybrid new metric of similarity is developed to combine functional similarity measurement and nonfunctional similarity measurement based on comprehensive QoS of Web services. the AWSR …
The Missouri Miner, September 20, 2012
The Missouri Miner, September 20, 2012
The Missouri Miner Newspaper
No abstract provided.
Faculty Senate Minutes September 20, 2012, Missouri University Of Science And Technology Faculty Senate
Faculty Senate Minutes September 20, 2012, Missouri University Of Science And Technology Faculty Senate
Minutes & Agendas
No abstract provided.
Mimo Multichannel Beamforming In Rayleigh-Product Channels With Arbitrary-Power Co-Channel Interference And Noise, Yongpeng Wu, Shi Jin, Xiqi Gao, Chengshan Xiao, Matthew R. Mckay
Mimo Multichannel Beamforming In Rayleigh-Product Channels With Arbitrary-Power Co-Channel Interference And Noise, Yongpeng Wu, Shi Jin, Xiqi Gao, Chengshan Xiao, Matthew R. Mckay
Electrical and Computer Engineering Faculty Research & Creative Works
This paper investigates communication over multiple-input multiple-output Rayleigh-product channels in the presence of both co-channel interference and thermal noise. We first present exact expressions for the marginal ordered eigenvalue distributions of the channel Gram matrix when multichannel beamforming is employed, from which we obtain exact results on the outage probability on each eigenmode. Our results are applicable to an extensive class of multichannel systems with generic system configurations. for particular scenarios of single-input multiple-output, keyhole, and multiple-input single-output channels, simplified closed-form expressions for the asymptotic distributions of the non-zero eigenvalue of the channel Gram matrix are derived. These results indicate …
Computational Modeling Of Baffled Disinfection Tanks, Zachary H. Taylor, Qing Xu, Jordan M. Wilson, Subhas K. Venayagamoorthy
Computational Modeling Of Baffled Disinfection Tanks, Zachary H. Taylor, Qing Xu, Jordan M. Wilson, Subhas K. Venayagamoorthy
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The present study focuses on understanding the flow dynamics of baffled disinfection contact tanks through the use of computational fluid dynamics (CFD). In particular, we seek to address the key question: for a given footprint of a contact tank with a fixed inlet configuration, how does the hydraulic efficiency of the tank depend on the configuration of internal baffles? The benchmark contact tank geometry in our study is shown in Figure 1. In order to define guidelines for hydraulically efficient baffle tanks, we perform a total of 36 high-resolution three-dimensional simulations to quantify the efficiency of a laboratory scale tank …
Evidence Of Electron Saddle Swap Oscillations In Angular Differential Ion-Atom Charge Exchange Cross Sections, S. Otranto, I. Blank, Ronald E. Olson, R. Hoekstra
Evidence Of Electron Saddle Swap Oscillations In Angular Differential Ion-Atom Charge Exchange Cross Sections, S. Otranto, I. Blank, Ronald E. Olson, R. Hoekstra
Physics Faculty Research & Creative Works
State selective charge exchange processes in 1-10keV/amu Ne8++Na(3s) collisions were measured by means of the magneto-optical trap recoil-ion momentum spectroscopy technique and compared to classical trajectory Monte Carlo calculations. We find that for electron capture to n-levels >= 10, the transverse momentum distributions exhibit an oscillatory structure which is very sensitive to the impact energy. Our theoretical analysis suggests that this feature is a direct consequence of the number of swaps the electron undergoes across the potential energy saddle during the charge exchange process. © 2012 IOP Publishing Ltd.
The Missouri Miner, September 13, 2012
The Missouri Miner, September 13, 2012
The Missouri Miner Newspaper
No abstract provided.
Nanostructured Dielectric Materials For High Energy Density Multi Layer Ceramic Capacitors, Fatih Dogan
Nanostructured Dielectric Materials For High Energy Density Multi Layer Ceramic Capacitors, Fatih Dogan
Materials Science and Engineering Faculty Research & Creative Works
A high energy density multilayer ceramic capacitor, having at least two electrode layers and at least one substantially dense polycrystalline dielectric layer positioned therebetween. The at polycrystalline dielectric layer has an average grain size of less than about 300 nanometers, a particle size distribution of between about 150 nanometers and about 3 micrometers, and a maximum porosity of about 1 percent. The dielectric layer is selected from the group including TiO2, BaTiO3, Al2O3, ZrO2, lead zirconium titanate, and combinations thereof and has a breakdown strength of at least about 1100 …