Digital Commons Network^™

Wiggle 3d Displays Of Weather Data, Frederick R. Mosher

Publications

Weather is a time varying 3-dimensional phenomena, but the displays of weather data are inherently 2-dimensional. Since weather phenomena at one level can impact the weather at another level, it would be desirable to view weather on a 3D volume type of display. Initially weather displays were on paper and currently weather information is displayed on computer screens. The human mind can interpret 3D volume information in a number of ways. Having two eyes, the brain can detect the parallax differences between the images for the left eye being slightly different from the right eye. Objects that are closer to …

Hubble Parameter Measurement Constraints On The Redshift Of The Deceleration-Acceleration Transition, Dynamical Dark Energy, And Space Curvature, Muhammad O. Farooq, Foram R. Madiyar, Sara Crandall, Bharat Ratra

Publications

We compile an updated list of 38 measurements of the Hubble parameter H(z) between redshifts 0.07 ≤ z ≤ 2.36 and use them to place constraints on model parameters of constant and time-varying dark energy cosmological models, both spatially flat and curved. We use five models to measure the redshift of the cosmological deceleration-acceleration transition, zda, from these H(z) data. Within the error bars, the measured zda are insensitive to the model used, depending only on the value assumed for the Hubble constant H0. The weighted mean of our measurements is zda = 0.72 ± 0.05 (0.84 ± 0.03) for …

Image And Information Fusion Experiments With A Software-Defined Multi-Spectral Imaging System For Aviation And Marine Sensor Networks, Sam B. Siewert, Matthew Demi Vis, Ryan Claus, Ramnarayan Krishnamurthy, Surjith B. Singh, Akshay K. Singh, Shivasankar Gunasekaran

Publications

The availability of Internet, line-of-sight and satellite identification and surveillance information as well as low-power, low-cost embedded systems-on-a-chip and a wide range of visible to long-wave infrared cameras prompted Embry Riddle Aeronautical University to collaborate with the University of Alaska Arctic Domain Awareness Center (ADAC) in summer 2016 to prototype a camera system we call the SDMSI (Software-Defined Multi-spectral Imager). The concept for the camera system from the start has been to build a sensor node that is drop-in-place for simple roof, marine, pole-mount, or buoy-mounts. After several years of component testing, the integrated SDMSI is now being tested, first …

Numerical Simulation Of Acoustic Emission During Crack Growth In 3-Point Bending Test, Mihhail Berezovski, Arkadi Berezovski

Publications

Numerical simulation of acoustic emission by crack propagation in 3-point bending tests is performed to investigate how the interaction of elastic waves generates a detectable signal. It is shown that the use of a kinetic relation for the crack tip velocity combined with a simple crack growth criterion provides the formation of waveforms similar to those observed in experiments.

Real Data Is Messy... And Manageable, Beverly Wood, Carl Clark

Publications

Using real data in an introductory statistics course is a delicate balance between reality and manageability. The internet is awash with data that is useful for students to answer questions of interest to them but it is not always formatted as neatly as textbook data. The ASA's recently endorsed GAISE College Report 2016 points to the plausibility of considering multivariable thinking even if only at a rudimentary level. With both messy and multivariable data in mind, we present some activities/projects and sources for data to give introductory students the opportunity to engage with real data.

Multi-Stage Axial Compressor With Counter-Rotation, Vinod Gehlot, Magdy S. Attia, Divyam Garg

Publications

A multi-stage axial compressor incorporating a counter-rotational movement is provided with a series of rotors mounted along and driven by a driveshaft, and a geared counter-rotating outer casing. A planetary gear system is assembled along a static casing, which can be assembled as a forward or aft casing for the compressor. The bearings of the planetary gear system typically will be aligned concentrically with a center rotor drum assembly mounted along the single driveshaft. The counter-rotating drum assembly will be assembled over the rotor drum assembly and will be engaged by the forward and aft casings so as to provide …

Anisotropic Fluid Modeling Of Ionospheric Upflow: Effects Of Low‐Altitude Anisotropy And Thermospheric Winds, M. R. Burleigh, M. Zettergren

Publications

A new anisotropic fluid model is developed to describe ionospheric upflow responses to magnetospheric forcing by electric fields and broadband ELF waves at altitudes of 90–2500 km. This model is based on a bi‐Maxwellian ion distribution and solves time‐dependent, nonlinear equations of conservation of mass, momentum, parallel energy, and perpendicular energy for six ion species important to E, F, and topside ionospheric regions. It includes chemical and collisional interactions with the neutral atmosphere, photoionization, and electron impact ionization. This model is used to examine differences between isotropic and anisotropic descriptions of ionospheric upflow driven by DC electric fields, …

Investigating The Role Of A District Science Coordinator, Brooke A. Whitworth, Jennifer L. Maeng, Lindsay B. Wheeler, Jennifer L. Chiu

Publications

This study explored the professional responsibilities of district science coordinators, their professional development (PD) experiences, the relationship between their role, responsibilities, district context, and background, and barriers encountered in their work. A national sample (n = 122) of self‐identified science coordinators completed a Science Coordinator Role Survey. Participants’ responses were analyzed using descriptive and correlational statistics. Following analysis of survey data, 16 participants (13.1%) were purposefully selected for semi‐structured follow‐up interviews. Results indicated the majority of respondents identified themselves as Caucasian, female, and had served in their position for less than 10 years. The typical science coordinator held a …

Towards Deadline Guaranteed Cloud Storage Services, Guoxin Liu, Haiying Shen, Lei Yu

Publications

More and more organizations move their data and workload to commercial cloud storage systems. However, the multiplexing and sharing of the resources in a cloud storage system present unpredictable data access latency to tenants, which may make online data-intensive applications unable to satisfy their deadline requirements. Thus, it is important for cloud storage systems to provide deadline guaranteed services. In this paper, to meet a current form of service level objective (SLO) that constrains the percentage of each tenant's data access requests failing to meet its required deadline below a given threshold, we build a mathematical model to derive the …

Delphiforce, A Tool For Electrostatic Force Calculations: Applications To Macromolecular Binding, Lin Li, Arghya Chakravorty, Emil Alexov

Publications

Long-range electrostatic forces play an important role in molecular biology, particularly in macromolecular interactions. However, calculating the electrostatic forces for irregularly shaped molecules immersed in water is a difficult task. Here, we report a new tool, DelPhiForce, which is a tool in the DelPhi package that calculates and visualizes the electrostatic forces in biomolecular systems. In parallel, the DelPhi algorithm for modeling electrostatic potential at user-defined positions has been enhanced to include triquadratic and tricubic interpolation methods. The tricubic interpolation method has been tested against analytical solutions and it has been demonstrated that the corresponding errors are negligibly small at …

Technological Modernization And Its Impact On Agriculture, Fisheries And Fossil Fuel Utilization In The Asia Pacific Countries With Emphasis On Sustainability Perspective, Rajee Olaganathan, Kathleen Quigley

Publications

Modernization is a process that moves towards efficiency. This affects most of the fields such as agriculture, fisheries, forestry, urban planning, policy, fossil fuel usage, manufacturing, technology, economic growth etc. This process plays a major role in moving forward making things faster, better and basically more efficient. The effects of modernization on all these fields bring about the major changes to aspects such as social, economic and the environment. The level of operation has increased from a domestic level; small family scale business to large commercial levels. As the level of operation increased, the utilization of natural resources increased gradually …

The Economic Contribution Of Casco Bay, Ryan Wallace

Publications

EXECUTIVE SUMMARY

Casco Bay is an ecological and environmental treasure to the people who live and work there, to the visitors it attracts, and to the diverse wildlife and living resources that make the Bay and watershed their home. However, the Bay also makes significant economic contributions in the form of jobs, provision of natural resources, and the provision of services. The natural amenities provided by Casco Bay also play a very important role in attracting and retaining high-skilled workers to the region that support a growing innovation-based regional economy. The Casco Bay Watershed Region is home to one-quarter of …

Elementary Science Teachers’ Integration Of Engineering Design Into Science Instruction: Results From A Randomised Controlled Trial, Jennifer L. Maeng, Brooke A. Whitworth, Amanda L. Gonczi, Shannon L. Navy, Lindsay B. Wheeler

Publications

This randomised controlled trial used a mixed-methods approach to investigate the frequency and how elementary teachers integrated engineering design (ED) principles into their science instruction following professional development (PD). The ED components of the PD were aligned with Cunningham and Carlsen’s [(2014). Teaching engineering practices. Journal of Science Teacher Education, 25, 197–210] guidelines for ED PD and promoted inclusion of ED within science teaching. The treatment group included 219 teachers from 83 schools. Participants in the control group included 145 teachers from 60 schools in a mid-Atlantic state. Data sources, including lesson overviews and videotaped classroom observations, were …

Stem, Video Game Play, & Gender = Personalization, Wendi M. Kappers

Publications

It is imperative when utilizing educational video games in K-12 classrooms that student preferences regarding game play, purpose, and design be considered to maximize game play efficiency for learning. As Web 2.0 content infiltrates our educational medium, student customization is key. This manuscript intends to share customization requests gleaned during an 18-week experimental study examining educational video game effects upon 7th graders enrolled in Mathematics and Mathematics 2 courses.

Stem, Video Game Play, & Gender = Personalization, Wendi M. Kappers

Publications

It is imperative when utilizing educational video games in K-12 classrooms that student preferences regarding game play, purpose, and design be considered to maximize game play efficiency for learning. As Web 2.0 content infiltrates our educational medium, student customization is key. This manuscript intends to share customization requests gleaned during an 18-week experimental study examining educational video game effects upon 7th graders enrolled in Mathematics and Mathematics 2 courses.

Preliminary Proactive Sample Size Determination For Confirmatory Factor Analysis Models, Jennifer Koran

Publications

Proactive preliminary minimum sample size determination can be useful for the early planning stages of a latent variable modeling study to set a realistic scope, long before the model and population are finalized. This study examined existing methods and proposed a new method for proactive preliminary minimum sample size determination. The Excel file mentioned in the article is also available as a supplemental file download.

Framing Appropriate Accommodations In Terms Of Individual Need: Examining The Fit Of Four Approaches To Selecting Test Accommodations Of English Language Learners, Jennifer Koran, Rebecca J. Kopriva

Publications

Providing appropriate test accommodations to most English language learners (ELLs) is important to facilitate meaningful inferences about learning. This study compared teacher large-scale test accommodation recommendations to those from a literature- and practitioner-grounded accommodation selection taxonomy. The taxonomy links student-specific needs, strengths and schooling experiences to large-scale test accommodation recommendations that differentially minimize barriers of access for students with different profiles. A blind panel of experts rated four sets of recommendations for each of 114 ELLs. Results found the taxonomy was a significantly better fit for distinguishing accommodations by student need than teacher recommendations. Further, the fit of teacher recommendations …

Derivation Of The Exponential Distribution Through An Infinite Sine Series, Todd C. Headrick, Michael E. May

Publications

This communication provides a derivation of the often-used oneparameter exponential family of distributions based on an infinite sine series. The main results associated with this derivation are the finite approximations of the probability density function (pdf) and the cumulative distribution function (cdf) of the exact one-parameter exponential family of distributions. The limit of these finite functions are the exact pdf and cdf. Numerical examples are provided to compare and contrast the finite approximations of distributions in terms of error using the finite-based cdf and the exact standard exponential cdf. We would also note that the finite approximations of the pdf …

Trustworthiness Requirements For Manufacturing Cyber-Physical Systems, Radu F. Babiceanu, Remzi Seker

Publications

Distributed manufacturing operations include cyber-physical systems vulnerable to cyber-attacks. Long time not considered a priority, cybersecurity jumped to the forefront of manufacturing concerns due to the need to network together legacy, newer equipment, and entire operation centers. This paper proposes trustworthiness solutions for integrated manufacturing physical-cyber worlds, where trustworthiness is defined to complement system dependability requirements with cybersecurity requirements, such that the resulting manufacturing cyber-physical system delivers services that can justifiably be trusted. Acknowledging the inevitability of cyber-attacks, the paper models the cybersecurity component using the resilient systems framework, where system resilience is viewed as preservation of a required state …

Search For Binaries In The Kepler K2 Fields Using Pulsation Timing Method, Tomomi Otani, Terry Oswalt

Publications

Finding orbital solutions of binaries which have small mass ratios (50 days) is challenging using traditional techniques. The radial velocity method is a good way to detect such binary stars, however it requires large telescopes. Therefore, the search for binaries in those regions is still incomplete. For binaries in this regime with at least one component that pulsates, pulsation timing is a better approach. Orbital solutions for such systems can be obtained from the periodic change in pulse arrival times as the star’s reflex motion is manifested by the changing distance along the line of sight. We present a search …

Through The Lens Of The Reviewer: Information Literacy, An Lms, And Peer Review, Wendi M. Kappers

Publications

This research paper describes the use of peer review to improve information literacy. Peer-reviewed assignments for learning have been seen favorably within the literature. The articulated benefits range from students feeling more engaged, having expressed less anxiety, or found to be better equipped to perform in unfamiliar areas outside their current learning environments. However, minimal research examines the benefits specifically for the feedback provider (reviewer) when a more modern tool, such as the Canvas Learning Management System (LMS) is used. During the fall 2015 semester, a study was conducted to examine the peer review process from the vantage point of …

Success Stories In Knowledge Management Systems, Leila Halawi, Richard Mccarthy, Janine Aronson

Publications

Historically, information systems have focused on capturing, storing, managing, and reporting explicit knowledge. Organizations today recognize the need to integrate both explicit and tacit knowledge in formal information systems. Knowledge management continues to be a critical strategy for an organization to achieve a sustainable competitive advantage, and consequently succeed in today's knowledge-based economy. Knowledge management systems (KMS) are a class of information systems that manage, store and distribute knowledge. Knowledge management systems have proliferated in practice. In turn, theoretical research on knowledge management and knowledge management systems has proliferated. Knowledge management systems have emerged as powerful sources of competitive advantage. …

The Basic Physics Of The Binary Black Hole Merger Gw150914, B. P. Abbott, K. Gill, B. Hughey, J. Pratt, M. J. Szczepańczyk, M. Zanolin, Et Al.

Publications

The first direct gravitational-wave detection was made by the Advanced Laser Interferometer Gravitational Wave Observatory on September 14, 2015. The GW150914 signal was strong enough to be apparent, without using any waveform model, in the filtered detector strain data. Here, features of the signal visible in the data are analyzed using concepts from Newtonian physics and general relativity, accessible to anyone with a general physics background. The simple analysis presented here is consistent with the fully general-relativistic analyses published elsewhere, in showing that the signal was produced by the inspiral and subsequent merger of two black holes. The black holes …

Beyond Zero-Sum Environmentalism, Sarah Krakoff, Shalanda Baker, Robin Kundis Craig, John Dernbach, Keith Hirokawa, Jessica Owley, Melissa Powers, Shannon Roesler, Jonathan Rosenbloom, J.B. Ruhl, Jim Salzman, Inara Scott, David Takacs

Publications

No abstract provided.

Can Practicing Mindfulness Improve Lawyer Decision-Making, Ethics, And Leadership?, Peter H. Huang

Publications

Jon Kabat-Zinn, the founder of mindfulness-based stress reduction, defines mindfulness as paying attention in a curious, deliberate, kind, and non-judgmental way to life as it unfolds each moment. Psychologist Ellen Langer defines mindfulness as a flexible state of mind actively engaging in the present, noticing new things, and being sensitive to context. Langer differentiates mindfulness from mindlessness, which she defines as acting based upon past behavior instead of the present and being stuck in a fixed, solitary perspective, oblivious to alternative multiple viewpoints. Something called mindfulness is currently very fashionable and has been so for some time now in American …

A Study Of Video-Mediated Opportunities For Self-Directed Learning In Required Core Curriculum, Debra T. Bourdeau, Donna Roberts, Beverly Wood, Johnelle Korioth

Publications

Improving a required course in our curriculum that has proven to be a challenge for our students was the focus of this study. Surveys of both students and instructors attempted to identify specific problem areas. Using the information from these surveys, the researchers developed a series of videos to explain vital course concepts and deployed these into the course sections. The purpose of the videos is to provide consistency across the multiple modalities in which we offer our courses (including online, classroom and via videoconferencing) and to improve overall student understanding. This project seeks to determine how supplemental content focusing …

Variational Principle For Velocity-Pressure Formulation Of Navier-Stokes Equations, Shahrdad Sajjadi

Publications

The work described here shows that the known variational principle for the Navier- Stokes equations and the adjoint system can be modified to produce a set of Euler- Lagrange variational equations which have the same order and same solution as the Navier-Stokes equations provided the adjoint system has a unique solution, and provided in the steady state case, that the Reynolds number remains finite.

The Value Of The Restatement Of Employment Law, Based On 50-State Empirical Analyses And The Importance Of Clarifying Disputed Issues – But With Caveats About The Restatement’S Imperfect Work Product, Scott A. Moss

Publications

No abstract provided.

Small Wins - Big Impact: Narratives From Behind The Scenes, Kelsey Joy Rodgers, James J. Pembridge, Leroy L. Long Iii, Matthew A. Verleger, Heidi Steinhauer

Publications

All instructors, administrators, and researchers that have engaged in the endeavor to teach, oversee, and/or transform first-year engineering courses have a story to tell about their successes and struggles. In this workshop, we use narrative inquiry to listen to participants’ stories about first-year engineering programs. Based on the analyses of these stories and deduced patterns, a few key struggles will be teased out to guide this interactive workshop. All participants will then further tell their stories of relevant experiences. Our goal is to address struggles and disseminate successes with first-year engineering programs for adoption and adaptation. Our goal is that …

Bankruptcy Beyond Status Maintenance, Govind Persad

Publications

This Article examines the tendency of current American bankruptcy law to maintain the social and economic status of middle- and upper-class debtors while doing much less to assist poorer debtors and non-debtors. In doing so, it examines and categorizes various aspects of statutory and case law that allow debtors to preserve their prior economic status. After reconstructing and rebutting the normative arguments offered in defense of these provisions, it suggests a proposal for reforming bankruptcy law to emphasize goals other than the maintenance of economic status. Part I of the Article begins by describing ways in which current bankruptcy law …