Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

PDF

Publications

Series

2017

Discipline
Institution
Keyword

Articles 1 - 30 of 443

Full-Text Articles in Entire DC Network

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 Dec 2017

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 …

Go to article

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. Dec 2017

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 …

Go to article

Low Frequency Electromagnetic Radiation From Gravitational Waves Generated By Neutron Stars, Preston Jones, Andri Gretarsson, Douglas Singleton Dec 2017

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.

Go to article

Synthetic Jet Actuator-Based Aircraft Tracking Using A Continuous Robust Nonlinear Control Strategy, N. Ramos-Pedroza, W. Mackunis, M. Reyhanoglu Dec 2017

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 …

Go to article

Socio-Cultural Determinants Of Physical Activity Across The Life Course: A 'Determinants Of Diet And Physical Activity' (Dedipac) Umbrella Systematic Literature Review, Lina Jaeschke, Astrid Steinbrecher, Agnes Luzak, Anna Puggina, Katina Aleksovska, Christoph Buck, Con Burns, Greet Cardon, Angela Carlin, Simon Chantal, Donatella Ciarapica, Giancarlo Condello, Tara Coppinger, Cristina Cortis, Marieke De Craemer, Sara D'Haese, Andrea Di Blasio, Sylvia Hansen, Licia Iacoviello, Johann Issartel, Pascal Izzicupo, Martina Kanning, Aileen Kennedy, Fiona Chun Man Ling, Giorgio Napolitano, Julie Anne Nazare, Camille Perchoux, Angela Polito, Walter Ricciardi, Alessandra Sannella, Wolfgang Schlicht, Rhoda Sohun Dec 2017

Socio-Cultural Determinants Of Physical Activity Across The Life Course: A 'Determinants Of Diet And Physical Activity' (Dedipac) Umbrella Systematic Literature Review, Lina Jaeschke, Astrid Steinbrecher, Agnes Luzak, Anna Puggina, Katina Aleksovska, Christoph Buck, Con Burns, Greet Cardon, Angela Carlin, Simon Chantal, Donatella Ciarapica, Giancarlo Condello, Tara Coppinger, Cristina Cortis, Marieke De Craemer, Sara D'Haese, Andrea Di Blasio, Sylvia Hansen, Licia Iacoviello, Johann Issartel, Pascal Izzicupo, Martina Kanning, Aileen Kennedy, Fiona Chun Man Ling, Giorgio Napolitano, Julie Anne Nazare, Camille Perchoux, Angela Polito, Walter Ricciardi, Alessandra Sannella, Wolfgang Schlicht, Rhoda Sohun

Publications

Objective: Regular physical activity (PA) reduces the risk of disease and premature death. Knowing factors associated with PA might help reducing the disease and economic burden caused by low activity. Studies suggest that socio-cultural factors may affect PA, but systematic overviews of findings across the life course are scarce. This umbrella systematic literature review (SLR) summarizes and evaluates available evidence on socio-cultural determinants of PA in children, adolescents, and adults. Methods: This manuscript was drafted following the recommendations of the 'Preferred Reporting Items for Systematic reviews and Meta-Analyses' (PRISMA) checklist. The MEDLINE, Web of Science, Scopus, and SPORTDiscus databases were …

Go to article

Highly Vented Truss Wall Honeycomb Structures, David J. Sypeck Dec 2017

Highly Vented Truss Wall Honeycomb Structures, David J. Sypeck

Publications

A vented honeycomb structure with a plurality of honey­comb cells arranged in a hierarchical order and having a plurality of truss walls, each truss wall including a plurality of members. The vented honeycomb structure is fabricated by joining a plurality of sheets of trusses using any one of an expansion, a corrugation, and a slotting process. Fabri­cation can also occur by deposition, casting, additive, extru­sion, or aligning and joining methods. The honeycomb cells, truss walls, truss wall openings, and truss wall members can be functionally graded.

Go to article

Highly Vented Truss Wall Honeycomb Structures, David J. Sypeck Dec 2017

Highly Vented Truss Wall Honeycomb Structures, David J. Sypeck

Publications

A vented honeycomb structure with a plurality of honey­comb cells arranged in a hierarchical order and having a plurality of truss walls, each truss wall including a plurality of members. The vented honeycomb structure is fabricated by joining a plurality of sheets of trusses using any one of an expansion, a corrugation, and a slotting process. Fabri­cation can also occur by deposition, casting, additive, extru­sion, or aligning and joining methods. The honeycomb cells, truss walls, truss wall openings, and truss wall members can be functionally graded.

Go to article

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. Dec 2017

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, …

Go to article

Worldwide Trends In Body-Mass Index, Underweight, Overweight, And Obesity From 1975 To 2016: A Pooled Analysis Of 2416 Population-Based Measurement Studies In 128·9 Million Children, Adolescents, And Adults, James Bentham, Mariachiara Di Cesare, Ver Bilano, Honor Bixby, Bin Zhou, Gretchen A. Stevens, Leanne M. Riley, Cristina Taddei, Kaveh Hajifathalian, Yuan Lu, Con Burns, Tara Coppinger, Janette Walton, Stefan Savin, Melanie J. Cowan, Christopher J. Paciorek, Adela Chirita-Emandi, Alison J. Hayes, Joanne Katz, Roya Kelishadi, Andre Pascal Kengne, Young Ho Khang, Avula Laxmaiah, Yanping Li, Jun Ma, J. Jaime Miranda, Aya Mostafa, Martin Neovius, Cristina Padez, Lekhraj Rampal, Aubrianna Zhu, James E. Bennett, Goodarz Danaei, Zulfiqar A. Bhutta, Majid Ezzati Dec 2017

Worldwide Trends In Body-Mass Index, Underweight, Overweight, And Obesity From 1975 To 2016: A Pooled Analysis Of 2416 Population-Based Measurement Studies In 128·9 Million Children, Adolescents, And Adults, James Bentham, Mariachiara Di Cesare, Ver Bilano, Honor Bixby, Bin Zhou, Gretchen A. Stevens, Leanne M. Riley, Cristina Taddei, Kaveh Hajifathalian, Yuan Lu, Con Burns, Tara Coppinger, Janette Walton, Stefan Savin, Melanie J. Cowan, Christopher J. Paciorek, Adela Chirita-Emandi, Alison J. Hayes, Joanne Katz, Roya Kelishadi, Andre Pascal Kengne, Young Ho Khang, Avula Laxmaiah, Yanping Li, Jun Ma, J. Jaime Miranda, Aya Mostafa, Martin Neovius, Cristina Padez, Lekhraj Rampal, Aubrianna Zhu, James E. Bennett, Goodarz Danaei, Zulfiqar A. Bhutta, Majid Ezzati

Publications

Background Underweight, overweight, and obesity in childhood and adolescence are associated with adverse health consequences throughout the life-course. Our aim was to estimate worldwide trends in mean body-mass index (BMI) and a comprehensive set of BMI categories that cover underweight to obesity in children and adolescents, and to compare trends with those of adults. Methods We pooled 2416 population-based studies with measurements of height and weight on 128·9 million participants aged 5 years and older, including 31·5 million aged 5–19 years. We used a Bayesian hierarchical model to estimate trends from 1975 to 2016 in 200 countries for mean BMI …

Go to article

Nonlinear Gravity Wave Forcing As A Source Of Acoustic Waves In The Mesosphere, Thermosphere, And Ionosphere, J. B. Snively Dec 2017

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 …

Go to article

First Low-Frequency Einstein@Home All-Sky Search For Continuous Gravitational Waves In Advanced Ligo Data, B. P. Abbott, K. Aultoneal, S. Gaudio, K. Gill, B. Hughey, J. W. W. Pratt, E. Schmidt, S. G. Schwalbe, M. J. Szczepańczyk, M. Zanolin, Et Al. Dec 2017

First Low-Frequency Einstein@Home All-Sky Search For Continuous Gravitational Waves In Advanced Ligo Data, B. P. Abbott, K. Aultoneal, S. Gaudio, K. Gill, B. Hughey, J. W. W. Pratt, E. Schmidt, S. G. Schwalbe, M. J. Szczepańczyk, M. Zanolin, Et Al.

Publications

We report results of a deep all-sky search for periodic gravitational waves from isolated neutron stars in data from the first Advanced LIGO observing run. This search investigates the low frequency range of Advanced LIGO data, between 20 and 100 Hz, much of which was not explored in initial LIGO. The search was made possible by the computing power provided by the volunteers of the Einstein@Home project. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population, corresponding to a sensitivity depth of 48.7 …

Go to article

Search For Post-Merger Gravitational Waves From The Remnant Of The Binary Neutron Star Merger Gw170817, 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. Dec 2017

Search For Post-Merger Gravitational Waves From The Remnant Of The Binary Neutron Star Merger Gw170817, 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

The first observation of a binary neutron star (NS) coalescence by the Advanced LIGO and Advanced Virgo gravitational-wave (GW) detectors offers an unprecedented opportunity to study matter under the most extreme conditions. After such a merger, a compact remnant is left over whose nature depends primarily on the masses of the inspiraling objects and on the equation of state of nuclear matter. This could be either a black hole (BH) or an NS, with the latter being either long-lived or too massive for stability implying delayed collapse to a BH. Here, we present a search for GWs from the remnant …

Go to article

Rfid Tags For On- And Off-Metal Applications, Ramiro Augusto Ramirez, Thomas Mccrea Weller, Eduardo Antonio Rojas Dec 2017

Rfid Tags For On- And Off-Metal Applications, Ramiro Augusto Ramirez, Thomas Mccrea Weller, Eduardo Antonio Rojas

Publications

In one embodiment, a radio-frequency identification (RFID) tag including a substrate having a top surface, bottom surface, opposed end surfaces, and opposed lateral surfaces, a passive RFID integrated circuit (IC) chip mounted to the top surface of the substrate, a monopole antenna that includes a planar radiating arm that extends out from the RFID IC chip along the top surface of the substrate and a matching loop having two grounded matching stubs that surround the chip and a portion of the radiating arm, and a ground plane formed on the bottom surface, an end surface, and the top surface of …

Go to article

A Globally Stable Attractor That Is Locally Unstable Everywhere, Phanindra Tallapragada, Senbagaraman Sudarsanam Dec 2017

A Globally Stable Attractor That Is Locally Unstable Everywhere, Phanindra Tallapragada, Senbagaraman Sudarsanam

Publications

We construct two examples of invariant manifolds that despite being locally unstable at every point in the transverse direction are globally stable. Using numerical simulations we show that these invariant manifolds temporarily repel nearby trajectories but act as global attractors. We formulate an explanation for such global stability in terms of the ‘rate of rotation’ of the stable and unstable eigenvectors spanning the normal subspace associated with each point of the invariant manifold. We discuss the role of this rate of rotation on the transitions between the stable and unstable regimes.

Go to article

Climbing Ability Of Teneral And Sclerotized Adult Bed Bugs And Assessment Of Adhesive Properties Of The Exoskeletal Fluid Using Atomic Force Microscopy, Kevin R. Hinson, Vladimir Reukov, Eric P. Benson, Patricia A. Zungoli, William C. Bridges, Brittany R. Ellis, Jinbo Song Dec 2017

Climbing Ability Of Teneral And Sclerotized Adult Bed Bugs And Assessment Of Adhesive Properties Of The Exoskeletal Fluid Using Atomic Force Microscopy, Kevin R. Hinson, Vladimir Reukov, Eric P. Benson, Patricia A. Zungoli, William C. Bridges, Brittany R. Ellis, Jinbo Song

Publications

We observed that teneral adults (<1 h post-molt) of Cimex lectularius L. appeared more adept at climbing a smooth surface compared to sclerotized adults. Differences in climbing ability on a smooth surface based on sclerotization status were quantified by measuring the height to which bed bugs climbed when confined within a glass vial. The average maximum height climbed by teneral (T) bed bugs (n = 30, height climbed = 4.69 cm) differed significantly (P< 0.01) from recently sclerotized (RS) bed bugs (n = 30, height climbed = 1.73 cm at ~48 h post molt), sclerotized group 1 (S1) bed bugs (n = …

Go to article

Long-Term Mark–Recapture Data To Assess Muskellunge Population Characteristics: Application To Two Illinois Reservoirs, Neil Rude, David C. Glover, William D. Hintz, Shawn Hirst, Wayne Herndon, Rob Hilsabeck, Gregory Whitledge Dec 2017

Long-Term Mark–Recapture Data To Assess Muskellunge Population Characteristics: Application To Two Illinois Reservoirs, Neil Rude, David C. Glover, William D. Hintz, Shawn Hirst, Wayne Herndon, Rob Hilsabeck, Gregory Whitledge

Publications

No abstract provided.

Go to article

Advertising Effect On Consumer Emotions, Judgements, And Purchase Intent, Tamilla Curtis, Anke Arnaud, Blaise P. Waguespack Dec 2017

Advertising Effect On Consumer Emotions, Judgements, And Purchase Intent, Tamilla Curtis, Anke Arnaud, Blaise P. Waguespack

Publications

Advertising has been found to induce consumer reactions, including emotions and judgements, which in turn are believed to relate to important outcomes, such as purchase intents. Marketing researches seek to understand these consumer reactions and their decision-making processes to influence purchase intents. This study focuses on the information role of emotion in understanding advertising effects and influencing consumer choices. Individuals use affective responses to evaluate information and to form judgements, which are critical in the decision-making process. This research further expands the Informative Strategy Model by adding judgement as a mediator. The results of a multiple mediation analysis provide support …

Go to article

Product Life-Cycle: New Products, Quality, Substitutes And Advertising In The Theatrical Movie Markets, Jayendra S. Gokhale, Wesley Wilson Dec 2017

Product Life-Cycle: New Products, Quality, Substitutes And Advertising In The Theatrical Movie Markets, Jayendra S. Gokhale, Wesley Wilson

Publications

In the market for US theatrical movies, there are a set of products (movies), and over time, new products appear and existing products disappear. We develop and estimate a model of the product cycle for movies and the decay of products over time to examine the effect of product quality, production cost, advertising and substitutes on the movie life cycle. Intuitively, new products should have a strong negative effect on the probability of survival of existing movies. The effect, however, is heterogeneously present only for the substitutes from some types (genres). While it is expected that good-quality movies tend to …

Go to article

Graphene Field Effect Transistors For Highly Sensitive And Selective Detection Of K+ Ions, Hongmei Li, Yihao Zhu, Md. Sayful Islam, Md. Anisur Rahman, Kenneth B. Walsh, Goutam Koley Dec 2017

Graphene Field Effect Transistors For Highly Sensitive And Selective Detection Of K+ Ions, Hongmei Li, Yihao Zhu, Md. Sayful Islam, Md. Anisur Rahman, Kenneth B. Walsh, Goutam Koley

Publications

Graphene-based ion sensitive field effect transistors (GISFETs) with high sensitivity and selectivity for K+ ion detection have been demonstrated utilizing valinomycin based ion selective membrane. The performance of the GISFETs for K+ ion detection was studied in various media over a concentration range of 1 μM–2 mM. The sensitivity of the sensor was found to be >60 mV/decade, which is comparable to the best Si-based commercial ISFETs, with negligible interference found from Na+ and Ca2+ ions in high concentration. The sensor performance did not change significantly in Tris–HCl solution or with repeated testing over a period of two months highlighting …

Go to article

Evaluating Attitudes And Experience With Emerging Technology In Cadets And Civilian Undergraduates, Richard Pak, Ericka Rovira, Anne Collins Mclaughlin, William Leidheiser Dec 2017

Evaluating Attitudes And Experience With Emerging Technology In Cadets And Civilian Undergraduates, Richard Pak, Ericka Rovira, Anne Collins Mclaughlin, William Leidheiser

Publications

Existing research on the characteristics of digital natives, traditionally defined as those born after 1980, has shown subtle differences in how they approach technology compared with other cohorts. However, much of the existing research has focused on a limited set of conventional technologies, mostly related to learning. In addition, prior research has shown differences within this cohort in how they respond to autonomous technology (e.g., trust, reliance; Pak, Rovira, McLaughlin, & Baldwin, 2016Pak, R., Rovira, E., McLaughlin, A., & Baldwin, N.(2016). Does the domain of technology impact user trust? Investigating trust in automation across different consumer-oriented domains in young …

Go to article

In Search Of Conversational Grain Size: Modelling Semantic Structure Using Moving Stanza Windows, Amanda L. Siebert-Evenstone, Golnaz Arastoopour Irgens, Wesley Collier, Zachari Swiecki, David Williamson Shaffer Dec 2017

In Search Of Conversational Grain Size: Modelling Semantic Structure Using Moving Stanza Windows, Amanda L. Siebert-Evenstone, Golnaz Arastoopour Irgens, Wesley Collier, Zachari Swiecki, David Williamson Shaffer

Publications

Analyses of learning based on student discourse need to account not only for the content of the utterances but also for the ways in which students make connections across turns of talk. This requires segmentation of discourse data to define when connections are likely to be meaningful. In this paper, we present an approach to segmenting data for the purposes of modeling connections in discourse using epistemic network analysis. Specifically, we use epistemic network analysis to model connections in student discourse using a temporal segmentation method adapted from recent work in the learning sciences. We compare the results of this …

Go to article

Reading Recovery In South Carolina: 2016-2017 State Report, C. C. Bates, Maryann Mcbride, Laura Coakley, Melissa Brewer Dec 2017

Reading Recovery In South Carolina: 2016-2017 State Report, C. C. Bates, Maryann Mcbride, Laura Coakley, Melissa Brewer

Publications

Developed by New Zealand educator Dr. Marie M. Clay, Reading Recovery® is a short-term early intervention for first grade students who have the lowest achievement on measures of literacy outcomes. Students meet individually with a specially trained teacher for 30 minutes each day for a period of 12-20 weeks. The goal during this period is for children to develop a network of reading and writing strategies so they may independently perform within the average range of their class.

Go to article

The Incompatibility Of A Daily School Pledge With A Democratic And Multicultural Education, William Mccorkle, Stephanie M. Madison Dec 2017

The Incompatibility Of A Daily School Pledge With A Democratic And Multicultural Education, William Mccorkle, Stephanie M. Madison

Publications

The Pledge of Allegiance has become a tradition in schools throughout the United States. The debate on this practice has often been limited due to the ideas of national pride that surround the pledge. This article addresses both the problematic history of the pledge, the protected precedence of teachers and students refusing to state the pledge, the pledge’s international abnormality, and the practical and philosophical concerns of a daily pledge in the public school setting. The article’s contention is that the pledge introduces a shallow view of national loyalty, while simultaneously endangering religious liberty, overlooking the views of marginalized and …

Go to article

Supporting The Supporters: Professional Development For Science Coordinators, Brooke A. Whitworth, Randy L. Bell, Jennifer L. Maeng, Amanda L. Gonczi Dec 2017

Supporting The Supporters: Professional Development For Science Coordinators, Brooke A. Whitworth, Randy L. Bell, Jennifer L. Maeng, Amanda L. Gonczi

Publications

We investigated changes in district science coordinators’ understandings and practices following their participation in a statewide professional development (PD). Participants included 13 male and 34 female science coordinators from 42 different school districts in Virginia. Data included presurvey, postsurvey, and delayed postsurvey responses; follow-up interviews; and observations of the PD and of science coordinators at work in their district. Results indicated that science coordinator understandings about pedagogy and job responsibilities changed following the PD and were aligned with the goals of PD. However, coordinators’ practices following PD did not fully reflect their understandings about pedagogy. Results suggest that PD aligned …

Go to article

Increase In The Reduction Potential Of Uranyl Upon Interaction With Graphene Oxide Surfaces, V. N. Bliznyuk, N. Conroy, Y. Xie, R. Podila, A. Rao, Brian A. Powell Dec 2017

Increase In The Reduction Potential Of Uranyl Upon Interaction With Graphene Oxide Surfaces, V. N. Bliznyuk, N. Conroy, Y. Xie, R. Podila, A. Rao, Brian A. Powell

Publications

Coordination of uranyl (U(VI)) with carboxylate groups on functionalized graphene oxide (GO) surfaces has been shown to alter the reduction potential of the sorbed uranium ion. A quantitative measure of the reduction potential and qualitative estimation of sorption/desorption processes were conducted using cyclic voltammetry, and the proposed coordination environment was determined using the surface sensitive attenuated total reflection mode of infrared spectroscopy (ATR-FTIR). GO is a nanostructured material possessing a large amount of oxygen-containing functional groups both on basal planes and at the edges, which can form strong surface complexes with radionuclides. The presence of these functional groups on the …

Go to article

Extended Lamer Synthesis Of Cobalt Doped Ferrite, Benjamin D. Fellows, Sarah Sandler, Jacob Livingston, Kristin Fuller, Lotanna Nwandu, Sarah Timmis, Kayla A. Lantz, Morgan Stefik, O. Thompson Mefford Dec 2017

Extended Lamer Synthesis Of Cobalt Doped Ferrite, Benjamin D. Fellows, Sarah Sandler, Jacob Livingston, Kristin Fuller, Lotanna Nwandu, Sarah Timmis, Kayla A. Lantz, Morgan Stefik, O. Thompson Mefford

Publications

Nonstoichiometric cobalt ferrite nanoparticles have drawn interest in magnetically mediated energy delivery due to their high magnetocrystalline anisotropy and their high peak loss frequency. The use of an extended LaMer synthesis allows for size control of the doped particles up to a threshold core diameter of 18 nm. Above this diameter, particles become unstable and drop out of suspension, allowing for further nucleation events to occur. This leads to a cyclic nucleation, growth, and destabilization regime seen during the course of the reaction. Using the size control of the extended LaMer synthesis technique, we examine the specific absorption rate (SAR) …

Go to article

A Pilot Study Of Computerized, Tailored Intervention To Promote Hpv Vaccination In Mexican-Heritage Adolescents, Angela Chia-Chen Chen, Michael Todd, Ashish Amresh, Usha Menon, Laura Szalacha Dec 2017

A Pilot Study Of Computerized, Tailored Intervention To Promote Hpv Vaccination In Mexican-Heritage Adolescents, Angela Chia-Chen Chen, Michael Todd, Ashish Amresh, Usha Menon, Laura Szalacha

Publications

This study examined feasibility, acceptability, and preliminary effects of a computer-tailored intervention aimed at promoting HPV vaccination in Mexican-heritage adolescents aged 11-17. Among 46 Mexican-heritage parents who had one or more eligible children who had not received HPV vaccines, 91% (n = 42) completed the intervention and assessments via touchscreen tablet computers in a vaccine clinic. Mean knowledge scores increased significantly from pre- to post-intervention. After the intervention, 95% (n = 40) of parents intended to get their children vaccinated; 50% (n=21) of them consented to vaccination immediately, resulting in 24 adolescents being vaccinated at that time. All parents reported …

Go to article

Critical Event Review Team (Cert), Jeffrey Kuhlman, Thomas Looke, Louis Barr, Jeanette Bartos, Gengie Nail, Brittany Almon, Joseph Keebler, Elizabeth Lazzara, Elizabeth Blickensderfer Dec 2017

Critical Event Review Team (Cert), Jeffrey Kuhlman, Thomas Looke, Louis Barr, Jeanette Bartos, Gengie Nail, Brittany Almon, Joseph Keebler, Elizabeth Lazzara, Elizabeth Blickensderfer

Publications

The culture of medicine is shifting from placing blame on providers to a systems-minded culture of trying to understand human error as a symptom of deeper rooted systemic issues. The goal is to reduce harm by redesigning the systems in which humans work.

Go to article

Search For High-Energy Neutrinos From Binary Neutron Star Merger Gw170817 With Antares, Icecube, And The Pierre Auger Observatory, M. G. Aartsen, 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. Dec 2017

Search For High-Energy Neutrinos From Binary Neutron Star Merger Gw170817 With Antares, Icecube, And The Pierre Auger Observatory, M. G. Aartsen, 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

The Advanced LIGO and Advanced Virgo observatories recently discovered gravitational waves from a binary neutron star inspiral. A short gamma-ray burst (GRB) that followed the merger of this binary was also recorded by the Fermi Gamma-ray Burst Monitor (Fermi-GBM), and the Anti-Coincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory (INTEGRAL), indicating particle acceleration by the source. The precise location of the event was determined by optical detections of emission following the merger. We searched for high-energy neutrinos from the merger in the GeV–EeV energy range using the ANTARES, IceCube, and Pierre Auger Observatories. No neutrinos directionally coincident …

Go to article

Aerodynamic Analysis Of Low Speed Wing Design Using Taguchi L9 Orthogonal Array, Kenneth Witcher, Ian Mcandrew, Elena Vishnevskaya Dec 2017

Aerodynamic Analysis Of Low Speed Wing Design Using Taguchi L9 Orthogonal Array, Kenneth Witcher, Ian Mcandrew, Elena Vishnevskaya

Publications

The study of aerodynamics has been preoccupied with understanding flight at increasing speeds and ultimately supersonic. Today, this pursuit has advanced the science for both Hypersonic and Transonic flight to near Mach 1 supporting economical commercial flight operations. This research presents the data from a Taguchi array on low speed with twin wing designs to establish the design parameters for their use in low speed and high altitude. Also presented is how aerodynamic advantages can be achieved through understanding the interactions of parameters and their use. This is compared to operational effectiveness when applied to remotely piloted aircraft that are …

Go to article

Next Last