Digital Commons Network^™

Secure Massive Mimo Transmission With An Active Eavesdropper, Yongpeng Wu, Robert Schober, Derrick Wing Kwan Ng, Chengshan Xiao, Giuseppe Caire

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, we investigate secure and reliable transmission strategies for multi-cell multi-user massive multiple-input multiple-output systems with a multi-Antenna active eavesdropper. We consider a time-division duplex system where uplink training is required, and an active eavesdropper can attack the training phase to cause pilot contamination at the transmitter. This forces the precoder used in the subsequent downlink transmission phase to implicitly beamform toward the eavesdropper, thus increasing its received signal power. Assuming matched filter precoding and artificial noise (AN) generation at the transmitter, we derive an asymptotic achievable secrecy rate when the number of transmit antennas approaches infinity. For …

Single Particle Icp-Ms Method Development For The Determination Of Plant Uptake And Accumulation Of Ceo2 Nanoparticles, Yongbo Dan, Xingmao Ma, Weilan Zhang, Kun Liu, Chady Stephan, Honglan Shi

Chemistry Faculty Research & Creative Works

Cerium dioxide nanoparticles (CeO₂NPs) are among the most broadly used engineered nanoparticles that will be increasingly released into the environment. Thus, understanding their uptake, transportation, and transformation in plants, especially food crops, is critical because it represents a potential pathway for human consumption. One of the primary challenges for the endeavor is the inadequacy of current analytical methodologies to characterize and quantify the nanomaterial in complex biological samples at environmentally relevant concentrations. Herein, a method was developed using single particle-inductively coupled plasma-mass spectrometry (SP-ICP-MS) technology to simultaneously detect the size and size distribution of particulate Ce, particle concentration, …

The First Potential Energy Surfaces For The C₆Hˉ-H₂ And C₆Hˉ-He Collisional Systems And Their Corresponding Inelastic Cross Sections, Kyle M. Walker, Fabien Dumouchel, François Lique, Richard Dawes

Chemistry Faculty Research & Creative Works

Molecular anions have recently been detected in the interstellar and circumstellar media. Accurate modeling of their abundance requires calculations of collisional data with the most abundant species that are usually He atoms and H₂ molecules. In this paper, we focus on the collisional excitation of the first observed molecular anion, C₆H^-, by He and H₂. Theoretical calculations of collisional cross sections rely generally on ab initio interaction potential energy surfaces (PESs). Hence, we present here the first PESs for the C₆H^--H₂ and C₆H^--He van …

Doping Evolution Of The Superconducting Gap Structure In The Underdoped Iron Arsenide Ba₁₋ₓkₓfe₂As₂ Revealed By Thermal Conductivity, J. Ph Reid, M. A. Tanatar, X. G. Luo, H. Shakeripour, S. René De Cotret, A. Juneau-Fecteau, J. Chang, B. Shen, H. H. Wen, Hyunsoo Kim, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

The thermal conductivity κ of the iron-arsenide superconductor Ba_1-xK_xFe₂As₂ was measured for heat currents parallel and perpendicular to the tetragonal c axis at temperatures down to 50 mK and in magnetic fields up to 15 T. Measurements were performed on samples with compositions ranging from optimal doping (x = 0.34, T_c = 39 K) down to dopings deep into the region where antiferromagnetic order coexists with superconductivity (x = 0.16, T_c = 7 K). In zero field, there is no residual linear term in κ(T) as T→0 at any doping, whether …

A New Application Of Machine Learning In Health Care, Kaj Mikael Björk, Yoan Miche, Emil Eirola, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

In Our Ever More Complex World, the Field of Analytics Has Dramatically Increased its Importance. Gut Feeling is No Longer Sufficient in Decision Making, But Intuition Has to Be Combined with Support from the Huge Amount of Data Available Today. Even If the Amount of Data is Enormous, the Quality of the Data is Not Always Good. Problems Arise in at Least Two Situations: I) the Data is Imprecise by Nature and Ii) the Data is Incomplete (Or There Are Missing Parts in the Data Set). Both Situations Are Problematic and Need to Be Addressed Appropriately. If These Problems Are …

Simultaneous Specimen Current And Time-Dependent Cathodoluminescence Measurements On Gallium Nitride, E. M. Campo, L. Hopkins, M. Pophristic, I. T. Ferguson

Electrical and Computer Engineering Faculty Research & Creative Works

Time-dependent cathodoluminescence (CL) and specimen current (SC) are monitored to evaluate trapping behavior and evolution of charge storage. Examination of CL and SC suggests that the near band edge emission in GaN is reduced primarily by the activation of traps upon irradiation, and Gallium vacancies are prime candidates. At the steady state, measurement of the stored charge by empiric-analytical methods suggests that all available traps within the interaction volume have been filled, and that additional charge is being stored interstitially, necessarily beyond the interaction volume. Once established, the space charge region is responsible for the steady state CL emission and, …

Sorting Under Forbidden Comparisons, Avah Banerjee, Dana Richards

Computer Science Faculty Research & Creative Works

In this paper we study the problem of sorting under forbidden comparisons where some pairs of elements may not be compared (forbidden pairs). Along with the set of elements V the input to our problem is a graph G(V, E), whose edges represents the pairs that we can compare in constant time. Given a graph with n vertices and m =(ⁿ₂) - q edges we propose the first non-trivial deterministic algorithm which makes O((q + n) log n) comparisons with a total complexity of O(n² + q^ω/2), where ω is the …

Faculty Senate Minutes Jun. 16, 2016, Missouri University Of Science And Technology Faculty Senate

Minutes & Agendas

No abstract provided.

Waveguide Probe For Nondestructive Material Characterization, Mohammad Tayeb Ahmad Ghasr, Matthew Kempin, R. Zoughi

Electrical and Computer Engineering Faculty Research & Creative Works

An open-ended waveguide probe including a finite flange extending outwardly and functioning as an infinite flange. A signal source provides a microwave signal to the waveguide, which in turn transmits microwave electromagnetic energy incident upon an object to be tested. The finite flange at the waveguide's aperture is shaped to reduce scattering of the electromagnetic field reflected from the object and received by the aperture. The probe is adapted for coupling to a receiver for sampling the reflected electromagnetic field received by the aperture and the receiver is adapted for coupling to a processor for determining at least one material …

On The Flux Richardson Number In Stably Stratified Turbulence, Subhas K. Venayagamoorthy, Jeffrey R. Koseff

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The flux Richardson number Rf (often referred to as the mixing efficiency) is a widely used parameter in stably stratified turbulence which is intended to provide a measure of the amount of turbulent kinetic energy k that is irreversibly converted to background potential energy (which is by definition the minimum potential energy that a stratified fluid can attain that is not available for conversion back to kinetic energy) due to turbulent mixing. The flux Richardson number is traditionally defined as the ratio of the buoyancy flux B to the production rate of turbulent kinetic energy P. An alternative generalized definition …

Seafloor Visual Saliency Evaluation For Navigation With Bow And Dbscan, Yue Geng, Zhiyuan Wang, Congcong Shi, Rui Nian, Cheng Zhang, Bo He, Yue Shen, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

In This Paper, We Try to Combine Bag-Of-Words (Bow) with Density-Based Spatial Clustering of Applications with Noise (DBSCAN) Together for One Kind of Sparse Representation in the Seafloor Visual Saliency Evaluation. Properties in the Water, Due to the Large Amount of Acoustic Noises, Sonar Signals Are Easily Polluted and Interfered during Image Collection, and the Sonar Images Usually Diverge from the True Underwater Environment or Degrade the Accuracy of the Measure, So Sparse Representation Has Been Taken into Consideration for Underwater Sonar Image Visual Saliency Evaluation. Our Method is a Simple and Computationally Efficient Extension of an Order less Bow …

Underwater Object Detection With Efficient Shadow-Removal For Side Scan Sonar Images, Ruijie Chang, Yaomin Wang, Jiaru Hou, Shuqi Qiu, Rui Nian, Bo He, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

Side Scan Sonar Has Been Widely Used in Ocean Investigations, Underwater Object Detection by Side Scan Sonar is One of the Most Essential and Fundamental Tasks These Years. in This Paper, We Present One Simplified Underwater Object Detection Scheme with the Help of Shadow Removal of Side Scan Sonar Images. the Fuzzy C-Mean Clustering (FCM) Algorithm is First Taken to Partition All Pixels from the Side Scan Sonar Images into a Collection of C Fuzzy Clusters, Which Makes Shadow Regions Be Segmented. the Criminisi Algorithm based on Isophote-Driven Image Sampling Process is Then Made Full Use of to Undertake the …

Underwater 3d Object Reconstruction With Multiple Views In Video Stream Via Structure From Motion, Xiao Xu, Renzheng Che, Rui Nian, Bo He, Meimei Chen, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

Underwater 3d Object Reconstruction is One of the Most Essential and Fundamental Tasks in Ocean Investigations. in This Paper, We Try to Capture the Inherent Geometrical Variation of 3d Objects at Multiple Visual Angels with the Underwater Vehicles and Develop a Novel Underwater 3d Object Reconstruction Model for the Continuous Video Stream. Image Enhancement Will Be First Taken into Consideration by Guided Image Filtering to Acquire Clearer Images for Object Tracking Which Can Be Completed by the Particle Filter. and Then, We Use Scale Invariant Feature Transform (Sift) and Random Sample Consensus (Ransac) to Detect and Correspond the Features of …

Chaotic Advection-Driven Mixing In Unsteady Three-Dimensional Mhd Flows In Microfluidic Devices, Fangping Yuan, Kakkattukuzhy M. Isaac

Collaborative Research: Actively Controllable Microfluidics with Film-Confined Redox-Magnetohydrodynamics -- Video and Data

No abstract provided.

Ccfss Special Edition Technical Bulletin Summer 2016, Wei-Wen Yu Center For Cold-Formed Steel Structures

CCFSS Technical Bulletins (1993 - 2020)

No abstract provided.

Our Digital Showcase Scholars' Mine, James Roger Weaver

Scholarly Communications - Educational and Promotional Materials

Scholars’ Mine is the institutional repository for the Missouri University of Science and Technology. Scholars' Mine provides access to the digital scholarly and cultural resources created by the university community. This includes faculty papers, departmental publications, conference proceedings, graduate student works, and other scholarly material, as well as campus cultural and historical works.

This promotional material consist of a bi-fold brochure describing Scholars' Mine general services for:

• Published Research,
• Customizable Faculty Profiles,
• Research Data,
• Scholarly Journals, Books and Conference Proceedings,
• Student Research and Creative Works, and
• Teaching and Learning Resources.

Additional flyers serve to provide more details for each service …

Benefit-Cost Analysis Of Commercially Available Activated Carbon Filters For Indoor Ozone Removal In Single-Family Homes, J. R. Aldred, E. Darling, G. Morrison, J. Siegel, R. L. Corsi

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study involved the development of a model for evaluating the potential costs and benefits of ozone control by activated carbon filtration in single-family homes. The modeling effort included the prediction of indoor ozone with and without activated carbon filtration in the HVAC system. As one application, the model was used to predict benefit-to-cost ratios for single-family homes in 12 American cities in five different climate zones. Health benefits were evaluated using disability-adjusted life-years and included city-specific age demographics for each simulation. Costs of commercially available activated carbon filters included capital cost differences when compared to conventional HVAC filters of …

Scholars' Mine Quick Facts June 2016, James Roger Weaver

Scholars’ Mine Statistics

Scholars' Mine statistical quick facts for June 2016.

Cement Hydration-Based Micromechanics Modeling Of The Time-Dependent Small-Strain Stiffness Of Fly Ash-Stabilized Soils, Xin Kang, Louis Ge, Wen Cheng Liao

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A contact mechanics model, based on the Hertzian elastic contact theory and cementation coating development at particulate scale, was established to predict the time-dependent small-strain stiffness of Class C fly ash-stabilized soils during curing. The cementation coating development model was developed at particulate level based on the Arrhenius law to predict the contact radius growth. A hyperbolic time-temperature relationship was proposed to capture the temperature change of fly ash-stabilized soils and links the pozzolanic reaction rate with curing time. Model-predicted small-strain stiffness was evaluated through both published and experimental test results with good success. The micromechanics modeling indicated that the …

Modification Of Upper-Ocean Temperature Structure By Subsurface Mixing In The Presence Of Strong Salinity Stratification, Emily L. Shroyer, Daniel L. Rudnick, J. Thomas Farrar, Byungho Lim, S. Karan Venayagamoorthy, Louis C.St Laurent, Amrapalli Garanaik, James N. Moum

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Bay of Bengal has a complex upper-ocean temperature and salinity structure that is, in places, characterized by strong salinity stratification and multiple inversions in temperature. Here, two short time series from continuously profiling floats, equipped with microstructure sensors to measure subsurface mixing, are used to highlight implications of complex hydrography on upper-ocean heat content and the evolution of sea surface temperature. Weak mixing coupled with the existence of subsurface warm layers suggest the potential for storage of heat below the surface mixed layer over relatively long-time scales. On the diurnal time scale, these data demonstrate the competing effects of …

Integrated Microsphere Whispering Gallery Mode Probe For Highly Sensitive Refractive Index Measurement, Hanzheng Wang, Lei Yuan, Cheol-Woon Kim, Jie Huang, Xinwei Lan, Hai Xiao

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

We report an integrated whispering gallery mode microresonator-based sensor probe for refractive index sensing. The probe was made by sealing a borosilicate glass microsphere into a thin-wall glass capillary pigtailed with a multimode optical fiber. The intensities of the resonant peaks were found decreasing exponentially (linearly in a log scale) with the increasing refractive index of the medium surrounding the capillary. The sensing capability of the integrated probe was tested using sucrose solutions of different concentrations and the resolution was estimated to be about 2.5 x 10^-5 in the index range of 1.3458 to 1.3847. The integrated sensor probe …

Experimental And Theoretical Triple-Differential Cross Sections For Tetrahydrofuran Ionized By Low-Energy 26-Ev-Electron Impact, Esam Ali, Xueguang Ren, Alexander Dorn, Chuangang Ning, James Colgan, Don H. Madison

Physics Faculty Research & Creative Works

We report an experimental and theoretical study of low-energy electron-impact ionization of tetrahydrofuran, which is a molecule of biological interest. The experiments were performed using an advanced reaction microscope specially built for electron-impact ionization studies. The theoretical calculations were performed within the molecular three-body distorted-wave model. Reasonably good agreement is found between experiment and theory.

Influence Of Orbital Symmetry On Diffraction Imaging With Rescattering Electron Wave Packets, Michael G. Pullen, Benjamin Wolter, Anh-Thu Le, Matthias Baudisch, Michele Sclafani, Hugo Pires, Claus Dieter Schroeter, Joachim Ullrich, Robert Moshammer, Thomas Pfeifer, C. D. Lin, Jens Biegert

Physics Faculty Research & Creative Works

The ability to directly follow and time-resolve the rearrangement of the nuclei within molecules is a frontier of science that requires atomic spatial and few-femtosecond temporal resolutions. While laser-induced electron diffraction can meet these requirements, it was recently concluded that molecules with particular orbital symmetries (such as π_g) cannot be imaged using purely backscattering electron wave packets without molecular alignment. Here, we demonstrate, in direct contradiction to these findings, that the orientation and shape of molecular orbitals presents no impediment for retrieving molecular structure with adequate sampling of the momentum transfer space. We overcome previous issues by showcasing …

Gw151226: Observation Of Gravitational Waves From A 22-Solar-Mass Binary Black Hole Coalescence, Benjamin P. Abbott, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

We report the observation of a gravitational-wave signal produced by the coalescence of two stellar-mass black holes. The signal, GW151226, was observed by the twin detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) on December 26, 2015 at 03:38:53 UTC. The signal was initially identified within 70 s by an online matched-filter search targeting binary coalescences. Subsequent off-line analyses recovered GW151226 with a network signal-to-noise ratio of 13 and a significance greater than 5σ. The signal persisted in the LIGO frequency band for approximately 1 s, increasing in frequency and amplitude over about 55 cycles from 35 to 450 Hz, …

Properties Of The Binary Black Hole Merger Gw150914, Benjamin P. Abbott, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

On September 14, 2015, the Laser Interferometer Gravitational-Wave Observatory (LIGO) detected a gravitational-wave transient (GW150914); we characterize the properties of the source and its parameters. The data around the time of the event were analyzed coherently across the LIGO network using a suite of accurate waveform models that describe gravitational waves from a compact binary system in general relativity. GW150914 was produced by a nearly equal mass binary black hole of masses 36_-4⁺⁵ M_⊙ and 29_-4⁺⁴M_⊙; for each parameter we report the median value and the range of the 90% credible interval. …

The C-H Stretching Features At 3.2-3.5 Μm Of Polycyclic Aromatic Hydrocarbons With Aliphatic Sidegroups, Xuejuan Yang, Aigen Li, Rainer Glaser, Jianxin Zhong

Chemistry Faculty Research & Creative Works

The so-called "unidentified" infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 μm are ubiquitously seen in a wide variety of astrophysical regions. The UIE features are characteristic of the stretching and bending vibrations of aromatic hydrocarbon materials, e.g., polycyclic aromatic hydrocarbon (PAH) molecules. The 3.3 μm aromatic C-H stretching feature is often accompanied by a weaker feature at 3.4 μm. The latter is generally thought to result from the C-H stretch of aliphatic groups attached to the aromatic systems. The ratio of the observed intensity of the 3.3 μm aromatic C-H feature to that of the 3.4 …

Missouri S&T Magazine Summer 2016, Missouri S&T Marketing And Communications Department, Miner Alumni Association

Missouri S&T Magazine

No abstract provided.

Resonant Effects In Nanoscale Bowtie Apertures, L. Ding, J. Qin, S. Guo, T. Liu, Edward C. Kinzel, L. Wang

Mechanical and Aerospace Engineering Faculty Research & Creative Works

No abstract provided.

Kinematically Complete Study Of Low-Energy Electron-Impact Ionization Of Argon: Internormalized Cross Sections In Three-Dimensional Kinematics, Xueguang Ren, Sadek Amami, Oleg Zatsarinny, Thomas Pflüger, Marvin Weyland, Alexander Dorn, Don H. Madison, Klaus Bartschat

Physics Faculty Research & Creative Works

As a further test of advanced theoretical methods to describe electron-impact single-ionization processes in complex atomic targets, we extended our recent work on Ne(2p) ionization [X. Ren, S. Amami, O. Zatsarinny, T. Pflüger, M. Weyland, W. Y. Baek, H. Rabus, K. Bartschat, D. Madison, and A. Dorn, Phys. Rev. A 91, 032707 (2015)PLRAAN1050-294710.1103/PhysRevA.91.032707] to Ar(3p) ionization at the relatively low incident energy of E₀ = 66 eV. The experimental data were obtained with a reaction microscope, which can cover nearly the entire 4π solid angle for the secondary electron emission. We present experimental data for detection angles of 10, …

Shear Wave Splitting Analyses In Tian Shan: Geodynamic Implications Of Complex Seismic Anisotropy, Solomon G. Cherie, Stephen S. Gao, Kelly H. Liu, Ahmed A. Elsheikh, Fansheng Kong, Cory A. Reed, Bin B. Yang

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The Tian Shan is a tectonically complex intracontinental orogenic belt situated between the Tarim Basin and the Kazakh Shield. The vast majority of the previous shear wave splitting (SWS) measurements were presented as station averages, which are only valid when the anisotropy structure can be approximated by a single layer of anisotropy with a horizontal axis of symmetry, i.e., a model of simple anisotropy. A variety of anisotropy-forming hypotheses have been proposed based on the station-averaged measurements. In this study, we measure the splitting parameters at 25 stations that recorded high-quality data from a wide back azimuthal range for the …