Digital Commons Network^™

Patroness Of The U.S.A., Ann Zlotnik

Marian Library Blog Archive

In honor of Independence Day, pray this act of consecration to Mary.

Secure Transmission And Retrieval Of Images In Conjunction With Steganography Using Chaos In Nonlinear Acousto-Optic Feedback, Monish Ranjan Chatterjee, Fares S. Almehmadi

Electrical and Computer Engineering Faculty Publications

Digital images are encrypted onto a chaotic carrier in a Bragg cell under hybrid nonlinear feedback and secure data is embedded into the system via steganography. System robustness (with and without channel noise) is analyzed vis-a-vis information security.

In The News: Posted July 1, 2015, Michael Duricy

Marian Library Blog Archive

Read recent items about Mary in both Catholic and secular news, as International Marian Research Institute news and updates.

The Department Of Electrical And Computer Engineering Newsletter, University Of Dayton. Department Of Electrical And Computer Engineering

Electrical and Computer Engineering Newsletter

Summer 2015

News and notes for University of Dayton's Department of Electrical and Computer Engineering.

Lalanne Handbook 2015, University Of Dayton

Lalanne Handbook

No abstract provided.

Dayton Lawyer, Summer 2015, University Of Dayton

Dayton Lawyer

No abstract provided.

July 2015, Pope Francis

Marian Thoughts of Pope Francis

No abstract provided.

University Of Dayton Magazine, Summer 2015, University Of Dayton Magazine

University of Dayton Alumni Publications

This issue includes articles "From War to Peace"; "Step Joyfully"; and "Believe".

Academic Program, 2015-16, International Marian Research Institute

IMRI Course Listings, Program Guides, and Assorted Academic Materials

No abstract provided.

State Preserving Extreme Learning Machine For Face Recognition, Md. Zahangir Alom, Paheding Sidike, Vijayan K. Asari, Tarek M. Taha

Electrical and Computer Engineering Faculty Publications

Extreme Learning Machine (ELM) has been introduced as a new algorithm for training single hidden layer feed-forward neural networks (SLFNs) instead of the classical gradient-based algorithms. Based on the consistency property of data, which enforce similar samples to share similar properties, ELM is a biologically inspired learning algorithm with SLFNs that learns much faster with good generalization and performs well in classification applications. However, the random generation of the weight matrix in current ELM based techniques leads to the possibility of unstable outputs in the learning and testing phases. Therefore, we present a novel approach for computing the weight matrix …

Eon, Vol. 03, No. 02, University Of Dayton. Electro-Optics And Photonics Program

Electro-Optics Newsletter

Summer 2015

News and notes from the University of Dayton Electro-Optics Graduate Program.

Automatic Video Self Modeling For Voice Disorder, Ju Shen, Changpeng Ti, Anusha Raghunathan, Sen-Ching S. Cheung, Rita Patel

Computer Science Faculty Publications

Video self modeling (VSM) is a behavioral intervention technique in which a learner models a target behavior by watching a video of him- or herself. In the field of speech language pathology, the approach of VSM has been successfully used for treatment of language in children with Autism and in individuals with fluency disorder of stuttering. Technical challenges remain in creating VSM contents that depict previously unseen behaviors. In this paper, we propose a novel system that synthesizes new video sequences for VSM treatment of patients with voice disorders. Starting with a video recording of a voice-disorder patient, the proposed …

Salient Object Detection Via Augmented Hypotheses, Tam Nguyen, Jose Sepulveda

Computer Science Faculty Publications

In this paper, we propose using augmented hypotheses which consider objectness, foreground, and compactness for salient object detection. Our algorithm consists of four basic steps. First, our method generates the objectness map via objectness hypotheses. Based on the objectness map, we estimate the foreground margin and compute the corresponding foreground map which prefers the foreground objects. From the objectness map and the foreground map, the compactness map is formed to favor the compact objects. We then derive a saliency measure that produces a pixel-accurate saliency map which uniformly covers the objects of interest and consistently separates foreground and background.

We …

Between Worlds: Securing Mixed Javascript/Actionscript Multi-Party Web Content, Phu Huu Phung, Maliheh Monshizadeh, Meera Sridhar, Kevin W. Hamlen, V. N. Venkatakrishnan

Computer Science Faculty Publications

Mixed Flash and JavaScript content has become increasingly prevalent; its purveyance of dynamic features unique to each platform has popularized it for myriad Web development projects. Although Flash and JavaScript security has been examined extensively, the security of untrusted content that combines both has received considerably less attention. This article considers this fusion in detail, outlining several practical scenarios that threaten the security of Web applications. The severity of these attacks warrants the development of new techniques that address the security of Flash-JavaScript content considered as a whole, in contrast to prior solutions that have examined Flash or JavaScript security …

Evaluation Of Different Optimal Control Problem Formulations For Solving The Muscle Redundancy Problem, Friedl De Groote, Allison Kinney, Anil Rao, Benjamin J. Fregly

Mechanical and Aerospace Engineering Faculty Publications

This study evaluates several possible optimal control problem formulations for solving the muscle redundancy problem with the goal of identifying the most efficient and robust formulation. One novel formulation involves the introduction of additional controls that equal the time derivative of the states, resulting in very simple dynamic equations. The nonlinear equations describing muscle dynamics are then imposed as algebraic constraints in their implicit form, simplifying their evaluation. By comparing different problem formulations for computing muscle controls that can reproduce inverse dynamic joint torques during gait, we demonstrate the efficiency and robustness of the proposed novel formulation.

Vascular Regulation Via Kir Channels And Na+ /K+-Atpase, Anne R. Crecelius, Frank A. Dinenno

Health and Sport Science Faculty Publications

Despite the longstanding knowledge that blood flow increases in proportion to metabolic activity of skeletal muscle, the underlying mechanisms that govern this response have only recently been identified.¹ Given the role of endothelial cells in mediating exercise hyperemia,² interest has been focused on endothelium-derived vasodilation occurring via the synthesis of nitric oxide (NO) and vasodilating prostaglandins (PGs; i.e. prostacyclin) or endothelium- derived hyperpolarization. A number of studies performed in humans have established a minimal-to-modest role for NO and PGs during mild- and moderate- intensity exercise. In animal preparations, prevention of hyperpolarization attenuates contraction-induced hyperemia; however, performing similar studies …

Ohio School Psychologists' Involvement With Concussion Cases, Susan C. Davies

Counselor Education and Human Services Faculty Publications

Concussions can result in a constellation of physical, cognitive, emotional, and sleep-related symptoms that affect students' wellness and performance at school. This study examined the number of concussion cases consulted on by a sample of Ohio school psychologists across two years.

Results indicated very little involvement with students who sustained concussions, with the majority of school psychologist respondents indicating that they consulted on zero cases. Suggestions for increasing school psychologists' involvement with concussion cases are provided, including serving as concussion team leaders, tracking students' symptoms and accommodations, and training others in their school community about concussion recognition and response.

2015 (Summer), University Of Dayton. Department Of Mathematics

Colloquia

Abstracts of the talks given at the 2015 Summer Colloquium.

Review: 'Death And Changing Rituals: Function And Meaning In Ancient Funerary Practices', Dorian Borbonus

History Faculty Publications

The fourteen conference papers in this collection explore chronological changes in funerary rituals and advance theoretical approaches that help explain such changes. The case studies range from the Mesolithic to the Early Modern periods and concentrate on European contexts. They are arranged chronologically, with four contributions on prehistory, one Etruscan, three Roman imperial, two late antique, three medieval and one early modern. The opening chapter briefly sets out five themes that characterize, to varying degrees, all subsequent contributions: change versus continuity, the relationship between practice and belief, the treatment and deposition of bodies, burial location and grave goods, and ritual …

Is Fracking An Inflammatory Word?, Blake Watson

School of Law Faculty Publications

Hydraulic fracturing is a method of oil and gas extraction. It involves the pumping of a mixture of proppants, chemicals, and large amounts of water into wells to exert pressure and fracture rock formations, thereby allowing otherwise “trapped” gas and oil to flow more freely. See Railroad Commission of Texas v. Citizens for a Safe Future and Clean Water, 336 S.W.3d 619, 621 (Tex. 2011) (describing the “fracing” process). With the development of horizontal drilling and more effective lubricants, it is now possible to remove “unconventional” sources of oil and gas located in shale and other dense substrata. Positive …

Synergy-Based Two-Level Optimization For Predicting Knee Contact Forces During Walking, Gil Serrancolí, Allison Kinney, Josep M. Font-Llagunes, Benjamin J. Fregly

Mechanical and Aerospace Engineering Faculty Publications

Musculoskeletal models and optimization methods are combined to calculate muscle forces. Some model parameters cannot be experimentally measured due to the invasiveness, such as the muscle moment arms or the muscle and tendon lengths. Moreover, other parameters used in the optimization, such as the muscle synergy components, can be also unknown. The estimation of all these parameters needs to be validated to obtain physiologically consistent results. In this study, a two-step optimization problem was formulated to predict both muscle and knee contact forces of a subject wearing an instrumented knee prosthesis. In the outer level, muscle parameters were calibrated, whereas …

Development Of A Muscle Model Parameter Calibration Method Via Passive Muscle Force Minimization, Allison Kinney, Benjamin J. Fregly

Mechanical and Aerospace Engineering Faculty Publications

Computational predictions of subject-specific muscle and knee joint contact forces during walking may improve individual rehabilitation treatment design. Such predictions depend directly on specified model parameter values. However, model parameters are difficult to measure non-invasively. Methods for muscle model parameter calibration have been developed previously. However, it is currently unknown how the musculoskeletal system chooses muscle model parameter values. Previous studies have hypothesized that muscles avoid injury during walking by generating little passive force and operating in the ascending region of the force-length curve. This hypothesis suggests that muscle model parameter values may be selected by the body to minimize …

Wing Tip Vortices From An Exergy-Based Perspective, Muhammad Omar Memon, Kevin Wabick, Aaron Altman, Rainer M. Buffo

Mechanical and Aerospace Engineering Faculty Publications

The lens of exergy is used to investigate a wingtip vortex in the near wake over a range of angles of attack. Exergy is the measure of thermodynamically “available” energy as determined through the more discriminating second law of thermodynamics. Experiments were conducted in a water tunnel at Institute of Aerospace Systems at Aachen.

The data were taken three chord lengths downstream in the Trefftz plane of an aspect ratio 5 Clark-Y wing with a square-edged wing tip using particle image velocimetry. Intuitively, the minimum available energy state is expected to correspond to the maximum lift-to-drag ratio angle of attack. …

High Performance Research, University Of Dayton

News Releases

The University of Dayton Research Institute has been awarded a $21.6 million, indefinite-delivery, indefinite-quantity Air Force contract for research and development in aerospace engine combustion technologies and components.

Electromagnetic Induction By Ferrofluid In An Oscillating Heating Pipe, John Gabriel Monroe, Erick S. Vasquez, Zachary S. Aspin, Keisha B. Walters, Matthew J. Berg, Scott M. Thompson

Chemical and Materials Engineering Faculty Publications

No abstract provided.

Weekly Features: Week Of June 29, 2015, University Of Dayton

Marian Library Blog Archive

Are there Marian relics? Learn about Saint Peter and the Vatican. Commemoration days for the months of June and July are included.

Analysis Of Particle Transport And Deposition Of Micron-Sized Particles In A 90° Bend Using A Two-Fluid Eulerian–Eulerian Approach, Erick S. Vasquez, Keisha B. Walters, D. Keith Walters

Chemical and Materials Engineering Faculty Publications

Two-phase flows involving dispersed particle and droplet phases are common in a variety of natural and industrial processes, such as aerosols, blood flow, emulsions, and gas-catalyst systems. For sufficiently dilute particle/aerosol phases, a simplified one-way coupling is often assumed, in which the continuous primary phase is unaffected by the presence of the dispersed secondary phase and standard CFD methods can be applied. To predict the transport and deposition of the particle phase, typically a Lagrangian particle-tracking or Eulerian one-fluid/two-phase drift-flux approach is used. Here, a full two-fluid Eulerian modeling approach is presented for coarse particles (>1 μm), in which …

A Research Leader, University Of Dayton

News Releases

John Leland, interim vice president for research for the University of Dayton and executive director of the Research Institute, will step into those roles permanently, effective July 1.

In The News: Posted June 24, 2015, Michael Duricy

Marian Library Blog Archive

Read recent items about Mary in both Catholic and secular news, as International Marian Research Institute news and updates.

A Steward's Adventure In Guatemala, Nick Racchi

Blog Archive: River Reflections at the University of Dayton

I recently just got back from an amazing trip to Guatemala. While there, I stayed with a host family in Quetzaltenago (called Xela by the locals), which is a beautiful city with some of the most amazing people that I have ever met. I was there for four weeks and had many adventures, like hiking to the top of the tallest point in Central America, seeing my first live tarantula, jumping off a forty foot bridge into a river, getting sick from eating some delicious street tacos, and learning more about myself and others than I ever thought possible.