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Timely Tidbits, May 18, 2012, Library And Learning Resources

Timely Tidbits

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Timely Tidbits, May 11, 2012, Library And Learning Resources

Timely Tidbits

No abstract provided.

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Sensors For Integrated Monitoring And Mitigation Of Scour, Genda Chen, David Pommerenke, Zhi Zhou, Ying Huang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Systems and methods for detecting scour. Some embodiments provide systems which include a sensor and a signal generator with a combined density equal to or greater than that of water. Optionally, the sensor can be a magnet, magnetic resonator, or accelerometer. In some embodiments, the sensor is adapted to be placed in regions potentially subject to scour and to sense a scour-related condition. The signal generator generates a wireless signal conveying data regarding the as-sensed scour-related. In some embodiments the sensor is the signal generator while a receiver of the wireless signal can include an antenna, a magnetometer, or an …

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Hydrocarbon/Water Interactions: Encouraging Energetics And Structures From Dft But Disconcerting Discrepancies For Hessian Indices, Kari L. Copeland, Gregory S. Tschumper

Chemistry Faculty Research & Creative Works

In this work, ab initio electronic structure computations have been used to systematically examine the structures and energetics of nine small hydrocarbon molecules interacting with water. Full geometry optimizations and harmonic vibrational frequency calculations were performed on 30 unique dimer configurations with the MP2 method and a triple-ζ correlation consistent basis set (cc-pVTZ for H and aug-cc-pVTZ for C and O, denoted haTZ). Three different estimates of the CCSD(T) complete basis set (CBS) limit interaction energies were determined for all 30 MP2 optimized hydrocarbon/water structures, and they never deviate from their mean by more than 0.07 kcal mol -1. MP2 …

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Accuracy Of Physics-Based Via Models For Simulation Of Dense Via Arrays, Sebastian Müller, Xiaomin Duan, Miroslav Kotzev, Yaojiang Zhang, Jun Fan, Xiaoxiong Gu, Young H. Kwark, Renato Rimolo-Donadio, Heinz Dietrich Brüns, Christian Schuster

Electrical and Computer Engineering Faculty Research & Creative Works

This paper studies the accuracy of the physics-Based via model, specifically when applied to dense via arrays. the physics-Based model uses Greens functions for cylindrical waves in radial waveguides to model the via return current paths and the coupling between vias. the effects of approximations made in this model are studied with regard to four types of modes based on an eigenmode expansion for the radial waveguide. It is found that for the mode conversion in the vicinity of the via, an accurate consideration of Non propagating modes becomes critical with an increasing cavity height. for the interaction between vias …

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Modular Reasoning About Region Composition, Thomas Cottenier, Aswin Van Den Berg, Thomas Weigert

Computer Science Faculty Research & Creative Works

Region composition is an operation where transitions of different automaton are woven together according to synchronization constraints. Reasoning about properties across regions is difficult, which is problematic in systems that are assembled by composing a large number of regions. We introduce two transactions constructs to enforce causality properties between transitions of a state machine. We show that transactions can be checked statically and that they support modular reasoning about region composition by preserving liveness properties within the scope of a transaction. © 2012 ACM.

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Architecture Composition For Concurrent Systems, Thomas Cottenier, Aswin Van Den Berg, Thomas Weigert

Computer Science Faculty Research & Creative Works

We present a framework to assemble concurrent applications from modules that capture reusable architectural patterns. the framework focuses on concurrent systems where computational processes communicate through asynchronous messages. the language provides support to modularize architectural patterns at different levels of granularity, using agents, regions, aspects and morphing. We present sample implementations of the architectural patterns and show how they are composed using a real-world example. Finally discuss how the deployment and composition of patterns can be further automated. © 2012 ACM.

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Management Of Feature Interactions With Transactional Regions, Thomas Cottenier, Aswin Van Den Berg, Thomas Weigert

Computer Science Faculty Research & Creative Works

This paper presents a modeling language to modularize the features of a system using orthogonal regions and to manage the interactions between these features. Orthogonal regions are a language construct to structure a state machine into a set of semi-independent behaviors. We introduce two concepts to manage the interactions between regions. First, we present a notion of interface between regions which captures the essence of their interactions. Second, we introduce a transactional composition operator to synchronize the regions and check the interaction for non-determinism and termination. the approach is evaluated by comparing a monolithic legacy implementation of a telecommunication component …

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Timely Tidbits, May 4, 2012, Library And Learning Resources

Timely Tidbits

No abstract provided.

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Scaling Relations And The Role Of Bond-Charge To The Electron Transmission Through Two Coupled Aharonov-Bohm Rings, Cheng-Hsiao Wu, Lam C. Tran, C. A. Cain

Electrical and Computer Engineering Faculty Research & Creative Works

Electron transport and the exact scaling relations for two irreducibly coupled Aharonov-Bohm (AB) rings with two external terminals attached are investigated. In coupled AB rings, a center common path exists where the phase of the electron wave function can be modulated by two applied fluxes simultaneously. The two coupled rings can be considered as two coupled atoms where Fermi level crossings exist not only between bonding states but also between bonding and anti-bonding states when the applied flux is varied in one of the two cases studied. We show that when the smallest atomic-sized coupled rings are scaled up any …

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Character-Based Automated Human Perception Quality Assessment In Document Images, Tayo Obafemi-Ajayi, Gady Agam

Electrical and Computer Engineering Faculty Research & Creative Works

Large degradations in document images impede their readability and deteriorate the performance of automated document processing systems. Document image quality (IQ) metrics have been defined through optical character recognition (OCR) accuracy. Such metrics, however, do not always correlate with human perception of IQ. When enhancing document images with the goal of improving readability, e.g., in historical documents where OCR performance is low and/or where it is necessary to preserve the original context, it is important to understand human perception of quality. The goal of this paper is to design a system that enables the learning and estimation of human perception …

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Silver Coated Bioactive Glass Particles For Wound Healing Applications, A. W. Wren, A. Coughlan, P. Hassanzadeh, Mark R. Towler

Chemical and Biochemical Engineering Faculty Research & Creative Works

Bioactive glass particles (0.42SiO₂-0.15CaO-0.23Na ₂O-0.20ZnO) of varying size (<90 >μm and 425-850 μm) were synthesized and coated with silver (Ag) to produce Ag coated particles (PAg). These were compared against the uncoated analogous particles (Pcon.). Surface area analysis determined that Ag coating of the glass particles resulted in increased the surface area from 2.90 to 9.12 m²/g (90 μm) and 1.09-7.71 m²/g (425-850 μm). Scanning electron microscopy determined that the Ag coating remained at the surface and there was little diffusion through the bulk. Antibacterial (Escherichia coli - 13 mm and Staphylococcus epidermidis …

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Reduction Of Solid-Solid Thermal Boundary Resistance By Inserting An Interlayer, Zhi Liang, Hai-Lung Tsai

Mechanical and Aerospace Engineering Faculty Research & Creative Works

An Effective Method is Proposed to Greatly Improve the Thermal Transport Across the Interface between Two Solids with Dissimilar Phonon Spectra. If the Two Solids Have Similar Crystal Structure and Lattice Constant, It is Predicted from the Molecular Dynamics Modeling that an over 50% Reduction of the Thermal Boundary Resistance Can Be Achieved by Inserting a 3-Unit-Cell-Thick Interlayer Whose Debye Temperature is Approximately the Square Root of the Product of the Debye Temperatures of the Two Solids. on the Other Hand, If the Two Solids Have a Large Difference in Lattice Constant, It is Found the Interfacial Atomic Restructuring Plays …

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Search For Gravitational Waves From Intermediate Mass Binary Black Holes, J. Abadie, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

We present the results of a weakly modeled burst search for gravitational waves from mergers of nonspinning intermediate mass black holes in the total mass range 100-450M_⊙ and with the component mass ratios between 1:1 and 4:1. The search was conducted on data collected by the LIGO and Virgo detectors between November of 2005 and October of 2007. No plausible signals were observed by the search which constrains the astrophysical rates of the intermediate mass black holes mergers as a function of the component masses. In the most efficiently detected bin centered on 88 + 88 M_⊙, …

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Material Flow And Microstructural Evolution During Friction Stir Spot Welding Of Az31 Magnesium Alloy, W. Yuan, Rajiv S. Mishra, B. Carlson, R. Verma, R. K. Mishra

Materials Science and Engineering Faculty Research & Creative Works

Material flow and local texture evolution during friction stir spot welding (FSSW) of AZ31 magnesium alloy was characterized by varying tool rotation rates. Texture at various locations of the welded region was measured using electron backscatter diffraction (EBSD). Material flow is significantly influenced by tool rotation rate with a conical step spiral pin tool, and FSSW introduces a unique basal fiber texture in the welded region. Results indicate that local texture evolution is dominated by shear deformation through material flow. the tool shoulder applies both shear and compressive deformation to the upper region material; however, the rotating pin introduces only …

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Phase Resolved Near-Field Mode Imaging For The Design Of Frequency-Selective Surfaces, Edward C. Kinzel, J. C. Ginn, R. L. Olmon, D. J. Shelton, B. A. Lail, I. Brenner, M. B. Sinclair, M. B. Raschke, G. D. Boreman

Mechanical and Aerospace Engineering Faculty Research & Creative Works

No abstract provided.

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Novel Heavy Duty Engine Concept For Operation Dual Fuel H 2-Nh3, Alberto A. Boretti

Mechanical and Aerospace Engineering Faculty Research & Creative Works

A prior paper has presented a novel design of a heavy-duty truck engine fueled with H2. in this design, the customary in-cylinder Diesel injector and glow plug are replaced with a main chamber fuel injector and a jet ignition pre-chamber. the jet ignition pre-chamber is a small volume that is connected to the in-cylinder through calibrated orifices accommodating another fuel injector and a glow or a spark plug that controls the start of combustion. This design permits to operate the engine in four different modes: traditional compression ignition (CI), diffusion, Diesel-like (M1); mixed gasoline/Diesel-like (M2); traditional spark ignition (SI), premixed, …

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First Low-Latency Ligo+Virgo Search For Binary Inspirals And Their Electromagnetic Counterparts, J. Abadie, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

Aims. The detection and measurement of gravitational-waves from coalescing neutron-star binary systems is an important science goal for ground-based gravitational-wave detectors. In addition to emitting gravitational-waves at frequencies that span the most sensitive bands of the LIGO and Virgo detectors, these sources are also amongst the most likely to produce an electromagnetic counterpart to the gravitational-wave emission. A joint detection of the gravitational-wave and electromagnetic signals would provide a powerful new probe for astronomy. Methods. During the period between September 19 and October 20, 2010, the first low-latency search for gravitational-waves from binary inspirals in LIGO and Virgo data was …

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Disorder Promotes Ferromagnetism: Rounding Of The Quantum Phase Transition In Sr₁₋ₓcaₓruo₃, Laszlo Demko, Sandor Bordacs, Thomas Vojta, David Nozadze, Fawaz Hrahsheh, Christopher Svoboda, Balazs Dora, Hiroyuki Yamada, Masashi Kawasaki, Yoshinori Tokura, Istvan Kezsmarki

Physics Faculty Research & Creative Works

The subtle interplay of randomness and quantum fluctuations at low temperatures gives rise to a plethora of unconventional phenomena in systems ranging from quantum magnets and correlated electron materials to ultracold atomic gases. Particularly strong disorder effects have been predicted to occur at zero-temperature quantum phase transitions. Here, we demonstrate that the composition-driven ferromagnetic-to-paramagnetic quantum phase transition in Sr_1-xCa_xRuO₃ is completely destroyed by the disorder introduced via the different ionic radii of the randomly distributed Sr and Ca ions. Using a magneto-optical technique, we map the magnetic phase diagram in the composition-temperature space. We find …

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Dissipation Effects In Random Transverse-Field Ising Chains, Jose A. Hoyos, Thomas Vojta

Physics Faculty Research & Creative Works

We study the effects of Ohmic, super-Ohmic, and sub-Ohmic dissipation on the zero-temperature quantum phase transition in the random transverse-field Ising chain by means of an (asymptotically exact) analytical strong-disorder renormalization-group approach. We find that Ohmic damping destabilizes the infinite-randomness critical point and the associated quantum Griffiths singularities of the dissipationless system. The quantum dynamics of large magnetic clusters freezes completely, which destroys the sharp phase transition by smearing. The effects of sub-Ohmic dissipation are similar and also lead to a smeared transition. In contrast, super-Ohmic damping is an irrelevant perturbation; the critical behavior is thus identical to that of …

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Effective Dielectric Constant Of Two Phase Dielectric Systems, Vladimir Petrovsky, Piotr Jasinski, Fatih Dogan

Materials Science and Engineering Faculty Research & Creative Works

Various theoretical approaches are implemented for electrical characterization of two-phase material systems. Most of these approaches do not include possibility of percolation of the dispersed material. In this article brick wall model is extended on the systems exhibiting percolation. Transition from brick wall geometry to corresponding equivalent circuits provides final equations for effective dielectric constant. Comparison of theoretical results with experimental data shows that developed equations provide good fitting of effective dielectric constant to experimental values. Dielectric constants of both phases and percolation threshold calculated from the fitting match the corresponding experimental values of the phases.

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Agency And Emotion In Interactions With Technological Representatives Of Organizations, Daniel Burton Shank

Psychological Science Faculty Research & Creative Works

Technology often displaces humans in organizations as a representative to customers. How does the use of computer technology instead of humans to represent an organization change customers’ feelings and behavior toward that organization? Drawing on attribution theory and the affect theory of social exchange, I argue that the customers’ perception of agency of the computer or human representative is the primary mechanism through which customers respond differently. I theorize that agency not only mediates the computer-to-emotion and computer-to-patronage relations but also alters whether the organization or its representative is the primary target of the emotions and patronage. My central argument …

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Quantum Griffiths Singularities In Ferromagnetic Metals, David Nozadze, Thomas Vojta

Physics Faculty Research & Creative Works

We present a theory of the quantum Griffiths phases associated with the ferromagnetic quantum phase transition in disordered metals. For Ising spin symmetry, we study the dynamics of a single rare region within the variational instanton approach. For Heisenberg symmetry, the dynamics of the rare region is studied using a renormalization group approach. In both cases, the rare region dynamics is even slower than in the usual quantum Griffiths case because the order parameter conservation of an itinerant ferromagnet hampers the relaxation of large magnetic clusters. The resulting quantum Griffiths singularities in ferromagnetic metals are stronger than power laws. For …

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Efficient On-Line Module-Level Wake-Up Scheduling For High Performance Multi-Module Designs, Ming Chao Lee, Yiyu Shi, Yu Guan Chen, Diana Marculescu, Shih Chieh Chang

Electrical and Computer Engineering Faculty Research & Creative Works

Power consumption has become the major bottleneck for modern high-performance architectures, which typically contain large numbers of modules. to suppress leakage power, sleep transistors have been extensively used, and wake-up scheduling is needed to determine the wake-up times and order of these sleep transistors. Most existing works on wake-up scheduling are based on sleep transistors and delay buffers in daisy-chains; they work well for the gate-level scheduling within a module when all the gates need to be turned on. Yet, for state-of-the-art designs, the number of modules that need to be turned on and their locations may vary depending on …

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Faculty Senate Minutes April 26, 2012 (Special Meeting), Missouri University Of Science And Technology Faculty Senate

Minutes & Agendas

No abstract provided.

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The Missouri Miner, April 26, 2012

The Missouri Miner Newspaper

No abstract provided.

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Capturing The Phantom Of The Power Grid - On The Runtime Adaptive Techniques For Noise Reduction, Tao Wang, Pei Wen Luo, Yu Shih Su, Liang Chia Cheng, Ding Ming Kwai, Yiyu Shi

Electrical and Computer Engineering Faculty Research & Creative Works

Power supply noise has become one of the primary concerns in low power designs. to ensure power integrity, designers need to make sure that voltage droop and bounce do not exceed noise margin in all possible scenarios. Since it is very difficult to capture the exact worst corner among the mist of complex functionalities in modern VLSI designs, statistical design methodologies have been adapted, which may bring significant design overhead. in view of this, various runtime techniques have been proposed in literature to suppress power grid noise adaptively. This paper first presents various challenges in power grid designs from an …

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Experimental Evaluation Of The Effect Of Queue Management Schemes On The Performance Of High Speed Tcps In 10gbps Network Environment, Lin Xue, Cheng Cui, Suman Kumar, Seung Jong Park

Computer Science Faculty Research & Creative Works

Queue management schemes at the routers and congestion avoidance schemes at the end points cooperate to provide good congestion solutions in computer networks. While queue management schemes are still being developed, research on congestion avoidance has come a long way to serve the bandwidth requirement of the networks (e.g. high-speed networks, data centers, etc.) at the order of 10Gbps. Because of considerable lack on the evaluation research work, there is no consensus on the choice of the queue management algorithms over these networks. To the best of our knowledge, this is the first work that presents experimental evaluation of the …

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Timely Tidbits, Apr. 20, 2012, Library And Learning Resources

Timely Tidbits

No abstract provided.

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The Missouri Miner, April 19, 2012

The Missouri Miner Newspaper

No abstract provided.

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Full-Text Articles in Entire DC Network

Timely Tidbits, May 18, 2012, Library And Learning Resources

Timely Tidbits

Timely Tidbits, May 11, 2012, Library And Learning Resources

Timely Tidbits

Sensors For Integrated Monitoring And Mitigation Of Scour, Genda Chen, David Pommerenke, Zhi Zhou, Ying Huang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Hydrocarbon/Water Interactions: Encouraging Energetics And Structures From Dft But Disconcerting Discrepancies For Hessian Indices, Kari L. Copeland, Gregory S. Tschumper

Chemistry Faculty Research & Creative Works

Accuracy Of Physics-Based Via Models For Simulation Of Dense Via Arrays, Sebastian Müller, Xiaomin Duan, Miroslav Kotzev, Yaojiang Zhang, Jun Fan, Xiaoxiong Gu, Young H. Kwark, Renato Rimolo-Donadio, Heinz Dietrich Brüns, Christian Schuster

Electrical and Computer Engineering Faculty Research & Creative Works

Modular Reasoning About Region Composition, Thomas Cottenier, Aswin Van Den Berg, Thomas Weigert

Computer Science Faculty Research & Creative Works

Architecture Composition For Concurrent Systems, Thomas Cottenier, Aswin Van Den Berg, Thomas Weigert

Computer Science Faculty Research & Creative Works

Management Of Feature Interactions With Transactional Regions, Thomas Cottenier, Aswin Van Den Berg, Thomas Weigert

Computer Science Faculty Research & Creative Works

Timely Tidbits, May 4, 2012, Library And Learning Resources

Timely Tidbits

Scaling Relations And The Role Of Bond-Charge To The Electron Transmission Through Two Coupled Aharonov-Bohm Rings, Cheng-Hsiao Wu, Lam C. Tran, C. A. Cain

Electrical and Computer Engineering Faculty Research & Creative Works

Character-Based Automated Human Perception Quality Assessment In Document Images, Tayo Obafemi-Ajayi, Gady Agam

Electrical and Computer Engineering Faculty Research & Creative Works

Silver Coated Bioactive Glass Particles For Wound Healing Applications, A. W. Wren, A. Coughlan, P. Hassanzadeh, Mark R. Towler

Chemical and Biochemical Engineering Faculty Research & Creative Works

Reduction Of Solid-Solid Thermal Boundary Resistance By Inserting An Interlayer, Zhi Liang, Hai-Lung Tsai

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Search For Gravitational Waves From Intermediate Mass Binary Black Holes, J. Abadie, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

Material Flow And Microstructural Evolution During Friction Stir Spot Welding Of Az31 Magnesium Alloy, W. Yuan, Rajiv S. Mishra, B. Carlson, R. Verma, R. K. Mishra

Materials Science and Engineering Faculty Research & Creative Works

Phase Resolved Near-Field Mode Imaging For The Design Of Frequency-Selective Surfaces, Edward C. Kinzel, J. C. Ginn, R. L. Olmon, D. J. Shelton, B. A. Lail, I. Brenner, M. B. Sinclair, M. B. Raschke, G. D. Boreman

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Novel Heavy Duty Engine Concept For Operation Dual Fuel H 2-Nh3, Alberto A. Boretti

Mechanical and Aerospace Engineering Faculty Research & Creative Works

First Low-Latency Ligo+Virgo Search For Binary Inspirals And Their Electromagnetic Counterparts, J. Abadie, Marco Cavaglia, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

Disorder Promotes Ferromagnetism: Rounding Of The Quantum Phase Transition In Sr₁₋ₓcaₓruo₃, Laszlo Demko, Sandor Bordacs, Thomas Vojta, David Nozadze, Fawaz Hrahsheh, Christopher Svoboda, Balazs Dora, Hiroyuki Yamada, Masashi Kawasaki, Yoshinori Tokura, Istvan Kezsmarki

Physics Faculty Research & Creative Works

Dissipation Effects In Random Transverse-Field Ising Chains, Jose A. Hoyos, Thomas Vojta

Physics Faculty Research & Creative Works

Effective Dielectric Constant Of Two Phase Dielectric Systems, Vladimir Petrovsky, Piotr Jasinski, Fatih Dogan

Materials Science and Engineering Faculty Research & Creative Works

Agency And Emotion In Interactions With Technological Representatives Of Organizations, Daniel Burton Shank

Psychological Science Faculty Research & Creative Works

Quantum Griffiths Singularities In Ferromagnetic Metals, David Nozadze, Thomas Vojta

Physics Faculty Research & Creative Works

Efficient On-Line Module-Level Wake-Up Scheduling For High Performance Multi-Module Designs, Ming Chao Lee, Yiyu Shi, Yu Guan Chen, Diana Marculescu, Shih Chieh Chang

Electrical and Computer Engineering Faculty Research & Creative Works

Faculty Senate Minutes April 26, 2012 (Special Meeting), Missouri University Of Science And Technology Faculty Senate

Minutes & Agendas

The Missouri Miner, April 26, 2012

The Missouri Miner Newspaper

Capturing The Phantom Of The Power Grid - On The Runtime Adaptive Techniques For Noise Reduction, Tao Wang, Pei Wen Luo, Yu Shih Su, Liang Chia Cheng, Ding Ming Kwai, Yiyu Shi

Electrical and Computer Engineering Faculty Research & Creative Works

Experimental Evaluation Of The Effect Of Queue Management Schemes On The Performance Of High Speed Tcps In 10gbps Network Environment, Lin Xue, Cheng Cui, Suman Kumar, Seung Jong Park

Computer Science Faculty Research & Creative Works

Timely Tidbits, Apr. 20, 2012, Library And Learning Resources

Timely Tidbits

The Missouri Miner, April 19, 2012

The Missouri Miner Newspaper