Digital Commons Network^™

A Complementary Cyber-Human Systems Framework For Industry 4.0 Cyber-Physical Systems, Matthew Krugh, Laine Mears

Publications

Humans are a vital element to automotive manufacturing; however, skilled production personnel have largely been designated as data receivers in Cyber-Physical Systems (CPS) of Industry 4.0. A renewed focus on the human worker who completes significant portions of manual value-added content in automotive assembly through Cyber-Human Systems (CHS) is allowing humans to perform their jobs more safely, efficiently, and supporting enhanced control and quality monitoring of manual manufacturing tasks. There is a need for a unified complementary framework of CHS and CPS to guide the implementation of future smart manufacturing systems.

Investigating Gravity Waves In Polar Mesospheric Clouds Using Tomographic Reconstructions Of Aim Satellite Imagery, V. P. Hart, M. J. Taylor, T. E. Doyle, Yucheng Zhao, Pierre-Dominique Pautet, B. L. Carruth, D. W. Rusch, J. M. Russell Iii

Publications

This research presents the first application of tomographic techniques for investigating gravity wave structures in polar mesospheric clouds (PMCs) imaged by the Cloud Imaging and Particle Size instrument on the NASA AIM satellite. Albedo data comprising consecutive PMC scenes were used to tomographically reconstruct a 3‐D layer using the Partially Constrained Algebraic Reconstruction Technique algorithm and a previously developed “fanning” technique. For this pilot study, a large region (760 × 148 km) of the PMC layer (altitude ~83 km) was sampled with a ~2 km horizontal resolution, and an intensity weighted centroid technique was developed to create novel 2‐D surface …

American Lobster Settlement Index, Update 2018, Richard Wahle Phd, Noah Oppenheim

Publications

With US lobster landings looking like they may be either stabilizing or slipping off their 2016 all-time high, and Canadian landings surging ahead, many in the industry and management on both sides of the border are wondering how the landscape may change for the future of North America’s most valuable fishery. Even as 2018 landings are still being tallied in some sectors, Maine reported a 7% uptick from its 16% downturn in 2017. Canadian harvests on the other hand have been booming, with Gulf of St. Lawrence fisheries reporting double-digit increases over the past few years. Widespread declines in settlement …

Gamma-Ray-Emitting Narrow-Line Seyfert 1 Galaxies In The Sloan Digital Sky Survey, Vaidehi S. Paliya, M. Ajello, A. Mandal, C. S. Stalin, A. Kaur, D. Hartmann

Publications

The detection of significant γ-ray emission from radio-loud narrow-line Seyfert 1 (NLSy1s) galaxies enables us to study jets in environments different than those in blazars. However, due to the small number of known γ-ray-emitting NLSy1 (γ-NLSy1) galaxies, a comprehensive study could not be performed. Here, we report the first detection of significant γ-ray emission from four active galactic nuclei (AGNs), recently classified as NLSy1 from their Sloan Digital Sky Survey (SDSS) optical spectrum. Three flat-spectrum radio quasars (FSRQs) present in the third Large Area Telescope AGN catalog (3LAC) are also found as γ-NLSy1 galaxies. …

Sustainability Programs In Business, Universities, And K-12: Educating Students And Leaders Toward A Sustainability Mindset, Danielle J. Camacho, Jill M. Legare

Publications

The purpose of this article is to contribute to the growing body of research that focuses on best practices for environmental sustainability education in K-12 classrooms. A review of related literature included emerging trends, commitment by business leaders to engage in CSR activities in the community, and opportunities for education at the K-12 level. The review of existing literature provides examples as to how sustainability-based environmental programs may provide educational foundations for business leaders and educators. Adopting sustainability course work, programs and projects allows students and educators to acquire knowledge and the competencies necessary for the 21st century. Administrators, business …

A Comparison Of Online, Video Synchronous, And Traditional Learning Modes For An Introductory Undergraduate Physics Course, Emily K. Faulconer, John C. Griffith, Beverly Wood, Donna Roberts

Publications

While the equivalence between online and traditional classrooms has been well-researched, very little of this includes college-level introductory Physics. Only one study explored Physics at the whole-class level rather than specific course components such as a single lab or a homework platform. In this work, we compared the failure rate, grade distribution, and withdrawal rates in an introductory undergraduate Physics course across several learning modes including traditional face-to-face instruction, synchronous video instruction, and online classes. Statistically significant differences were found for student failure rates,grade distribution, and withdrawal rates but yielded small effect sizes. Post-hoc pair-wise test was run to determine …

Software Safety And Security Risk Mitigation In Cyber-Physical Systems, Miklos Biro, Atif Mashkoor, Johannes Sametinger, Remzi Seker

Publications

Cyber-physical systems (CPSs) offer many opportunities but pose many challenges--especially regarding functional safety, cybersecurity, and their interplay, as well as the systems' impact on society. Consequently, new methods and techniques are needed for CPS development and assurance. This article [and issue] aims to address some of these challenges.

Fatal General Aviation Accidents In Furtherance Of Business (1996–2015): Rates, Risk Factors, And Accident Causes, Scott Burgess, Stewart Boyd, Douglas D. Boyd

Publications

Introduction: General aviation missions related to furtherance of business potentially carry higher risk (operations in adverse weather, at night, for longer distances) than those undertaken for recreation. The study herein was undertaken to determine fatal accident rates, proportions, and risk factors/causes. Method: The National Transportation Safety Board aviation accident database was queried for accidents (1996–2015). Annual fleet times were from the general aviation annual activity survey. Statistical analyses used Poisson distributions, proportion testing, and Cohen’s Kappa tests. Results: The fatal accident rate for business operations was three- to six-fold lower than the rate for recreational flights with a decline evident …

The Potemkin Temptation Or, The Intoxicating Effect Of Rhetoric And Narrativity On American Craft Whiskey, Derek H. Kiernan-Johnson

Publications

No abstract provided.

Adventures In Higher Education, Happiness, And Mindfulness, Peter H. Huang

Publications

This Article recounts my unique adventures in higher education, including being a Princeton University freshman mathematics major at age 14, Harvard University applied mathematics graduate student at age 17, economics and finance faculty at multiple schools, first-year law student at the University of Chicago, second- and third-year law student at Stanford University, and law faculty at multiple schools. This Article also candidly discusses my experiences as student and professor and openly shares how I achieved sustainable happiness by practicing mindfulness to reduce fears, rumination, and worry in facing adversity, disappointment, and setbacks. This Article analyzes why law schools should teach …

Precision Of Provider Licensure Data For Mapping Member Accessibility To Medicaid Managed Care Provider Networks., Nathaniel Bell, Ana Lopez-De Fede, Rebecca C. Wilkerson, Kathy Mayfield-Smith

Publications

Background: In July 2018, the Centers for Medicare and Medicaid Services (CMS) updated its Medicaid Managed Care (MMC) regulations that govern network and access standards for enrollees. There have been few published studies of whether there is accurate geographic information on primary care providers to monitor network adequacy. Methods: We analyzed a sample of nurse practitioner (NP) and physician address data registered in the state labor, licensing, and regulation (LLR) boards and the National Provider Index (NPI) using employment location data contained in the patient-centered medical home (PCMH) data file. Our main outcome measures were address discordance (%) at the …

Take-Off Characteristics For Naca 4612 Aerofoil In A Twin-Wing Configuration With Optimum Angles Of Attack, Elena Vishnevskaya, Kenneth L. Witcher, Ian R. Mcandrew

Publications

Unmanned Aerial Vehicles are used generally at low levels and speeds. The research reported in this article investigates the possible use of twin-wing designs for higher altitudes with a focus on the possible lift capable for either short runways or high payloads. The wing aerofoil and unique Angles of Attack, AoA, are set 5o on the upper wing and 10o on the lower. There is a positive upper wing stagger of 50% of the chord length at height separation of 1 chord. These parameters have been established from previous research and this research investigates how they generate lift at take-off …

Biomimetic Beetle-Inspired Flapping Air Vehicle Actuated By Ionic Polymer-Metal Composite Actuator, Yang Zhao, Di Xu, Jiazheng Sheng, Qinglong Meng, Dezhi Wu, Lingyun Wang, Jingjing Xiao, Wenlong Lv, Qinnan Chen, Daoheng Sun

Publications

During the last decades, the ionic polymer-metal composite (IPMC) received much attention because of its potential capabilities, such as large displacement and flexible bending actuation. In this paper, a biomimetic flapping air vehicle was proposed by combining the superiority of ionic polymer metal composite with the bionic beetle flapping principle. The blocking force was compared between casted IPMC and IPMC. The flapping state of the wing was investigated and the maximum displacement and flapping angle were measured. The flapping displacement under different voltage and frequency was tested. The flapping displacement of the wing and the support reaction force were measured …

Disclaiming Property, Michael Pappas

Publications

No abstract provided.

Scalar Field Vacuum Expectation Value Induced By Gravitational Wave Background, Preston Jones, Patrick Mcdougall, Michael Ragsdale, Douglas Singleton

Publications

We show that a massless scalar field in a gravitational wave background can develop a non-zero vacuum expectation value. We draw comparisons to the generation of a non-zero vacuum expectation value for a scalar field in the Higgs mechanism and with the dynamical Casimir vacuum. We propose that this vacuum expectation value, generated by a gravitational wave, can be connected with particle production from gravitational waves and may have consequences for the early Universe where scalar fields are thought to play an important role.

The Consensus Myth In Criminal Justice Reform, Benjamin Levin

Publications

It has become popular to identify a “consensus” on criminal justice reform, but how deep is that consensus, actually? This Article argues that the purported consensus is much more limited than it initially appears. Despite shared reformist vocabulary, the consensus rests on distinct critiques that identify different flaws and justify distinct policy solutions. The underlying disagreements transcend traditional left/right political divides and speak to deeper disputes about the state and the role of criminal law in society.

The Article maps two prevailing, but fundamentally distinct, critiques of criminal law: (1) the quantitative approach (what I call the “over” frame); and …

The Myth Of Platform Neutrality, Vivek Krishnamurthy, Anupam Chander

Publications

No abstract provided.

Research Of Sustainable Jet Fuel Production Using Microbes, Rajee Olaganathan

Publications

Global climate change, coupled with rapidly increasing oil prices and energy demand around the world, has paved a way for intense research in the biofuel sector. Stakeholders in the aviation industry have started to focus on bio-jet fuel. Bio-jet fuel is regarded as a sustainable solution to greenhouse gas emissions and energy demand. This paper provides a brief review of the biofuel production technologies, the role of bacteria in producing hydrocarbons and the recent advancements in microbial engineering to enhance the biofuel production. Finally, this paper concludes by highlighting the challenges and future research implications in bio-jet fuel production.

Infographic: Be An Engineer, Leroy L. Long Iii, William Wanyagah

Publications

Infographic on how to become an engineer.

Infographic: Institutional Barriers To Black And Latino Male Collegians’ Success In Engineering And Related Stem Fields, Leroy L. Long Iii, William Wanyagah

Publications

Infographic was created to support the article Institutional Barriers to Black and Latino Male Collegian's Success in Engineering and Related Stem Fields, which can be read here:

An Investigation Of The Relationship Between Grades And Learning Mode In An English Composition Course, Debra T. Bourdeau, Kelly V. Griffith, John Griffith, John R. Griffith

Publications

The education community has conducted studies on failure rates and withdrawal rates between learning modalities in the past, but few studies have evaluated grade distribution between learning modes or focused specifically on English Composition. Using 2,919 student grades from the 2015 – 2016 academic year for an English Composition course, researchers examined failure rates, grade distribution, and withdrawal rates between In-Person learning, Online learning, and Synchronous video learning modes. In this study, learning modes and failure rates were related. Synchronous video modes of instruction had higher failure rates than traditional In-Person classes. Synchronous video classroom students failed at a higher …

A Comparison Of Online And Traditional Chemistry Lecture And Lab, E. K. Faulconer, J. C. Griffith, Beverly L. Wood, S. Acharyya, D. L. Roberts

Publications

While the equivalence between online and traditional classrooms has been well researched, very little effort has been expended to do such comparisons for college level introductory chemistry. The existing literature has only one study that investigated chemistry lectures at an entire course level as opposed to particular course components such as individual topics or exams. Regarding lab courses, only one study is available and it involves moderating variables that are largely uncontrolled. In this work, we compared the student pass rates, withdrawal rates, and grade distributions between asynchronous online and traditional formats of an introductory chemistry lecture as well as …

Seeing And Understanding Data: A Mini-Primary Source Project For Students Of Statistics, Charlotte Bolch, Beverly Wood

Publications

Mathematicians and scientists included drawings in their work before the first statistical graphs were invented. However, their illustrations were meant to depict quantifiable relationships rather than exposing statistical variability. The uses of pictorial representations or charts to convey trends among variable measurements dates back to at least the late 10th century. However, this means of communication did not gain the widespread appreciation it enjoys today until technological advances in the 21st century stimulated the growth of a new field, data visualization. The mini-Primary Source Project (PSP) Seeing and Understanding Data provides students the opportunity to explore the evolution of statistical …

Writing As A Science Educator, Emily K. Faulconer

Publications

As scientists, we write to record observations and procedures. We write to analyze and present our data. We write to evaluate the works of others. My training in scientific writing started in earnest as an undergraduate student where I dutifully wrote lab reports and literature reviews. I learned how to write objectively. I practiced evidence-based arguments. After years of practice, this writing style is second nature. I see hints of it in my e-mail communication style. I even hear its echo in my administrative documents. This style is efficient and clear.

An Additional Pulsating Mode (7.35 Mhz) And Pulsations Timing Variations Of Pg 1613+426, Tomomi Otani, Terry D. Oswalt, Patrice Majewski, Riley Jordan, Marc Amaral, Adam Moss

Publications

We present the detection of an additional pulsation mode (7.35 mHz) of a subdwarf B star, PG 1613+426, and periodic Observed minus Calculated (O-C) variations for two existing pulsations. PG 1613+426 is near the hot end of the sdB instability strip. One pulsation mode (6.94 mHz) was detected so far by Bonanno et al. (2002) and another pulsation mode candidate (7.05 mHz) was proposed with a confidence level above 90% by Kuassivi and Ferlet (2005). To constrain sdB star evolutional scenarios, this star was monitored in 2010, 2011, 2015, and 2017 as a part of a project for finding companions …

First Narrow-Band Search For Continuous Gravitational Waves From Known Pulsars In Advanced Detector Data, B. P. Abbott, K. Aultoneal, S. Gaudio, K. Gill, E. M. Gretarsson, B. Hughey, M. Muratore, J. W. W. Pratt, S. G. Schwalbe, K. Staats, M. J. Szczepańczyk, M. Zanolin, Et Al.

Publications

Spinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters obtained from electromagnetic observations, can be carried out. Matched filtering maximizes the signal-to-noise (SNR) ratio, but a large sensitivity loss is expected in case of even a very small mismatch between the assumed and the true signal parameters. For this reason, narrow-band analysis methods have been developed, allowing a fully coherent search for gravitational waves from known pulsars …

Low Frequency Electromagnetic Radiation From Gravitational Waves Generated By Neutron Stars, Preston Jones, Andri Gretarsson, Douglas Singleton

Publications

We investigate the possibility of observing very low frequency (VLF) electromagnetic radiation produced from the vacuum by gravitational waves. We review the calculations leading to the possibility of vacuum conversion of gravitational waves into electromagnetic waves and show how this process evades the well-known prohibition against particle production from gravitational waves. Using Newman-Penrose scalars, we estimate the luminosity of this proposed electromagnetic counterpart radiation coming from gravitational waves produced by neutron star oscillations. The detection of electromagnetic counterpart radiation would provide an indirect way of observing gravitational radiation with future spacecraft missions, especially lunar orbiting probes.

Synthetic Jet Actuator-Based Aircraft Tracking Using A Continuous Robust Nonlinear Control Strategy, N. Ramos-Pedroza, W. Mackunis, M. Reyhanoglu

Publications

A robust nonlinear control law that achieves trajectory tracking control for unmanned aerial vehicles (UAVs) equipped with synthetic jet actuators (SJAs) is presented in this paper. A key challenge in the control design is that the dynamic characteristics of SJAs are nonlinear and contain parametric uncertainty. The challenge resulting from the uncertain SJA actuator parameters is mitigated via innovative algebraic manipulation in the tracking error system derivation along with a robust nonlinear control law employing constant SJA parameter estimates. A key contribution of the paper is a rigorous analysis of the range of SJA actuator parameter uncertainty within which asymptotic …

Gw170608: Observation Of A 19 Solar-Mass Binary Black Hole Coalescence, B. P. Abbott, K. Aultoneal, S. Gaudio, K. Gill, E. M. Gretarsson, B. Hughey, M. Muratore, J. W. W. Pratt, S. G. Schwalbe, K. Staats, M. J. Szczepańczyk, M. Zanolin, Et Al.

Publications

On 2017 June 8 at 02:01:16.49 UTC, a gravitational-wave (GW) signal from the merger of two stellar-mass black holes was observed by the two Advanced Laser Interferometer Gravitational-Wave Observatory detectors with a network signal-to-noise ratio of 13. This system is the lightest black hole binary so far observed, with component masses of 12 +7 -2 M⨀ and 7 +2 -2 M⨀ (90% credible intervals). These lie in the range of measured black hole masses in low-mass X-ray binaries, thus allowing us to compare black holes detected through GWs with electromagnetic observations. The source’s luminosity distance is 340 +140 -140 Mpc, …

Nonlinear Gravity Wave Forcing As A Source Of Acoustic Waves In The Mesosphere, Thermosphere, And Ionosphere, J. B. Snively

Publications

Numerical simulations demonstrate theoretical predictions that gravity waves with short periods (∼4–8 min) in the mesosphere and lower thermosphere may force secondary acoustic waves, with harmonic periods (∼2-4 minutes), that can reach detectable amplitudes in the thermosphere and ionosphere. The mechanism is through their vertical fluxes of vertical momentum, which lead to forcing as they are disrupted by varying stratification or instability. This is shown likely to occur where horizontally or radially opposing gravity waves interact at large amplitudes, such as above large convective sources, and after overturning. Evanescence and reflection of the waves can lead to further enhancements of …