Physical Sciences and Mathematics Commons^™

Inner-Shelf Circulation And Sediment Dynamics On A Series Of Shoreface-Connected Ridges Offshore Of Fire Island, Ny, John Warner, Jeffrey List, William Schwab, George Voulgaris, Brandy Armstrong, Nicole Marshall

George Voulgaris

Locations along the inner-continental shelf offshore of Fire Island, NY, are characterized by a series of shoreface-connected ridges (SFCRs). These sand ridges have approximate dimensions of 10 km in length, 3 km spacing, and up to ∼8 m ridge to trough relief and are oriented obliquely at approximately 30° clockwise from the coastline. Stability analysis from previous studies explains how sand ridges such as these could be formed and maintained by storm-driven flows directed alongshore with a key maintenance mechanism of offshore deflected flows over ridge crests and onshore in the troughs. We examine these processes both with a limited …

Kentucky Forage Spokesperson Contest, Kentucky Forage And Grassland Council

Kentucky Grazing Conference

No abstract provided.

Observations Of Mesospheric Gravity Wave Dynamics In The Southern Hemisphere, Jonathan Pugmire, Michael Taylor

Jonathan Pugmire

Observations of mesospheric OH rotational temperature by the Mesospheric Temperature Mapper located at Cerro Pachon, Chile (30.3°S, 70.7°S) show a large range of variation. Temperature variances reveal increased activity due to mountain waves. Comparative studies with the satellite carried SABER instrument show agreement on nightly, as well as seasonal, temperature measurements. Comparisons with similar temperature measurements from Maui, Hawaii (20.8°N) reveal mountain wave activity to be enhanced over the Andes in the winter months. Initial gravity wave measurements from McMurdo Base, Antarctica are highlighted.

The First Ten Months Of Investigation Of Gravity Waves And Temperature Variability Over The Andes, Jonathan Pugmire, Neal Criddle, Michael J. Taylor, P. D. Pautet, Yucheng Zhao

Jonathan Pugmire

The Andes region is an excellent natural laboratory for investigating gravity wave influences on the Upper Mesospheric and Lower Thermospheric (MLT) dynamics. The instrument suite that comprised the very successful Maui-MALT program was recently re-located to a new Andes Lidar Observatory (ALO) located at Cerro Pachon, Chile to obtain in-depth seasonal measurements of MLT dynamics over the Andes mountains. As part of the instrument set the Utah State University CEDAR Mesospheric Temperature Mapper (MTM) has operated continuously since August 2009 measuring the near infrared OH(6,2) band and the O2(0,1) Atmospheric band intensity and temperature perturbations. This poster focuses on an …

Mesospheric Temperature Variability And Seasonal Characteristics Over The Andes, Jonathan Pugmire, Yucheng Zhao, Michael Taylor, P Pautet

Jonathan Pugmire

The Utah State University CEDAR Mesospheric Temperature Mapper (MTM) is a high-quality CCD imager capable of remote sensing faint optical emissions from the night sky to determine mesospheric temperature and its variability at an altitude of ~87 km. The MTM was operated at the new Andes Lidar Observatory (ALO)located at Cerro Pachon, Chile (30.2° S, 70.7° W) since August 2009 to investigate the seasonal characteristic of the mesopause at mid-latitudes. Measurement were made alongside a powerful lidar capable of height sounding the mesosphere. In this study, the MTM data have been analyzed to determine night to night variability and seasonal …

Intra-Annual Comparison Of Mesospheric Gravity Waves Over Halley And Rothera Stations, Antarctica, Jonathan Pugmire, Michael J. Taylor, K. Nielsen, A. Wall, J. Thompson, P. D. Pautet

Jonathan Pugmire

No abstract provided.

Can I Afford To Spray For Weeds?, Scott Flynn

Kentucky Grazing Conference

A common question among managers of grazing operations is “At what level of weed pressure does it become economical to apply herbicides on pastures?” Unfortunately there isn’t just one answer to this question as production goals and practices differ between operations and even within an operation over time. Regardless, the real question being ask is if weed control will increase profit per acre.

Grazing Options For Fall And Winter, Edward N. Ballard

Kentucky Grazing Conference

Feed costs represent the major cost in most livestock production systems. A recently completed analysis of 225 Standardized Performance Analysis (SPA) Beef Cow Records on herds in Illinois and Iowa showed that feed cost was the overriding factor determining profitability, explaining over 57 percent of the herd-to-herd variation.

Summer Grazing Options, S. Ray Smith, Krista Lea

Kentucky Grazing Conference

During the last 15 years there have been several new forage species that have emerged as useful in grazing systems and many new varieties have been released of traditional species. There are many sources of information on summer grazing options. We especially encourage you to read the publication written by Dr. Garry Lacefield and colleagues, “Extending Grazing and Reducing Stored Feed Needs” (AGR-199, www.uky.edu/Ag/Forage/agr199.pdf). I have used information from this publication and other publications from the University of Kentucky Forage Website (www.uky.edu/Ag/Forage) in writing this article.

Technical Service Provider: What Is It And Why Is It Important To You?, Bill Payne

Kentucky Grazing Conference

Progressive graziers and forage managers are continually looking to improve their operations’ productivity. The opportunity exists to have a Grazing Management Plan developed for your operation at little or no cost to you. By contacting your county NRCS office, you can apply to have this plan developed by a Technical Service Provider, an independent professional certified by NRCS.

Forage Legumes: Their Importance And Management In Profitable Livestock Systems, Ben M. Goff

Kentucky Grazing Conference

The landscape of most Kentucky operations is heavily dominated by the utilization of cool-season grasses as the primary source of forage for livestock. However, legumes species, such alfalfa and red or white clovers are an essential component to a complete forage-livestock system. Relative to grasses alone, incorporating legumes into a mixture has the benefits of improving the nutritive value of the available forage in the field, extending the grazing season by increasing the yield of forage during the early summer months, and providing a more economical source of N compared to commercial fertilizers. This paper will briefly describe each of …

Maximizing Stocker Gains On Pastures, Jeff Lehmkuhler

Kentucky Grazing Conference

Stocker enterprises by definition utilize pasture forages to add weight to light weight feeder cattle. These operations add value to calves by assimilating small groups of calves and combining them into larger uniform packages. Stocker operators also enhance quality through livestock husbandry practices that “upgrade” feeders which could include castrating bulls, dehorning, improving immunity and other attributes. In an effort to optimize profit margins, stocker operators must manage feeders to ensure high rates of gain while finding a balance in stocking rates that provide adequate gains per acre.

Grazing Method: Tool Or Toolbox?, Garry D. Lacefield

Kentucky Grazing Conference

This conference makes the 15th consecutive year we have devoted a full day to Grazing. Kentucky is a great state for grazing animals since we have a relatively long pasture season, can grow many forage grasses and legumes and a long tradition of producing quality animal products from quality pasture. We have tremendous potential to improve our overall grazing efficiency and the discussion throughout the day will address many of the practical strategies for improvements.

Foreword And Kfgc Award Winners [2014], Garry D. Lacefield, Christi L. Forsythe

Kentucky Grazing Conference

No abstract provided.

Reu Site: Explore It! Building The Next Generation Of Sustainable Forest Bioproduct Researchers, David Neivandt, Darrell W. Donahue

University of Maine Office of Research Administration: Grant Reports

The major goal of the project is to create the next generation of sustainable forest bioproduct researchers through providing them with an outstanding and relevant research experience.

Reu Site: Explore It! Building The Next Generation Of Sustainable Forest Bioproduct Researchers, David J. Neivandt, Darrell W. Donahue

University of Maine Office of Research Administration: Grant Reports

This three-year REU Site program builds on the substantial research strengths at the University of Maine. The focus on sustainable forest bioproducts is highly topical and of great global importance in the area of sustainable energy alternatives.

Ten US undergraduate participants will conduct research advancing their knowledge of the field in general and one of the thematic elements in detail, specifically:

1) sustainability and life cycle analysis,
2) feedstock extraction/modification,
3) process control and sensing,
4) nanomaterial production and utilization, and
5) new product development. In addition the program includes an international component whereby, six Chilean students on a mutual …

The Fierce Green Fire: Vol 5 Issue 7, Wofford College Environmental Studies Program

The Fierce Green Fire

No abstract provided.

The Santa Clara, 2014-10-23, Santa Clara University

The Santa Clara

No abstract provided.

Ecogeomorphic Feedbacks And Flood Loss Of Riparian Tree Seedlings In Meandering Channel Experiments, Li Kui, John C. Stella, Anne Lightbody, Andrew C. Wilcox

Geosciences Faculty Publications

During floods, fluvial forces interact with riparian plants to influence evolution of river morphology and floodplain plant community development. Understanding of these interactions, however, is constrained by insufficient precision and control of drivers in field settings, and insufficient realism in laboratory studies. We completed a novel set of flume experiments using woody seedlings planted on a sandbar within an outdoor meandering stream channel. We quantified effects on local sedimentation and seedling loss to scour and burial across realistic ranges of woody plant morphologies (Populus versus Tamarix species), densities (240 plants m^-2 versus 24 m^-2), and sediment …

Keck-I Mosfire Spectroscopy Of Compact Star-Forming Galaxies At Z ≳ 2: High Velocity Dispersions In Progenitors Of Compact Quiescent Galaxies, Guillermo Barro, Jonathan R. Trump, David C. Koo, Avishai Dekel, Susan A. Kassin, Dale D. Kocevski, Sandra M. Faber, Arjen Van Der Wel, Yicheng Guo, Pablo G. Pérez-González, Elisa Toloba, Jerome J. Fang, Camilla Pacifici, Raymond Simons, Randy D. Campbell, Daniel Ceverino, Steven L. Finkelstein, Bob Goodrich, Marc Kassis, Anton M. Koekemoer, Nicholas P. Konidaris, Rachel C. Livermore, James E. Lyke, Bahram Mobasher, Hooshang Nayyeri, Michael Peth, Joel R. Primack, Luca Rizzi, Rachel S. Somerville, Gregory D. Wirth, Adi Zolotov

Physics and Astronomy Faculty Publications

We present Keck-I MOSFIRE near-infrared spectroscopy for a sample of 13 compact star-forming galaxies (SFGs) at redshift 2 ≤ z ≤ 2.5 with star formation rates of SFR ~ 100 M _☉ yr^–1 and masses of log(M/M _☉) ~10.8. . . .

For the remainder of the abstract, please visit:

http://dx.doi.org/10.1088/0004-637X/795/2/145

Higgs Boson Mass In The Standard Model At Two-Loop Order And Beyond, Steve P. Martin, David G. Robertson

Physics Faculty Scholarship

We calculate the mass of the Higgs boson in the standard model in terms of the underlying Lagrangian parameters at complete 2-loop order with leading 3-loop corrections. A computer program implementing the results is provided. The program also computes and minimizes the standard model effective potential in Landau gauge at 2-loop order with leading 3-loop corrections.

Assessments Of Surface-Pelagic Drift Communities And Behavior Of Early Juvenile Sea Turtles In The Northern Gulf Of Mexico, Robert F. Hardy

USF Tampa Graduate Theses and Dissertations

Knowledge of species distribution and habitat associations are essential for conservation measures. Such information is lacking for many marine species due to their occupancy of broad and ephemeral habitats that are difficult to access for study. Sea turtles, specifically the surface-pelagic juvenile stage of some species, are a group for which significant knowledge gaps remain surrounding their distribution and habitat use. Recent research has confirmed the long-standing hypothesis that the surface-pelagic juvenile stage occurs within surface-pelagic drift communities (SPDC). Within the North Atlantic and surrounding basins, the holopelagic macroalgae Sargassum spp. dominates SPDC and serves as a remotely-detectable indicator of …

A Causal Model To Predict Organizational Knowledge Sharing Via Information And Communication Technologies, Simon Cleveland

CCE Theses and Dissertations

Knowledge management literature identifies numerous barriers that inhibit employees' knowledge seeking and knowledge contributing practices via information and communication technologies (ICTs). Presently, there is a significant gap in the literature that explains what factors promote common knowledge sharing barriers. To bridge this gap, this study examined two research questions: 1) What are the potential factors that contribute to the commonly accepted barriers to knowledge sharing?, and 2) How do these factors impact employees' use of ICTs for knowledge seeking and knowledge contributing? Literature review of 103 knowledge management articles identified three major barriers to knowledge sharing practices (lack of time, …

Structure, Stability, And Substituent Effects In Aromatic S-Nitrosothiols: The Crucial Effect Of A Cascading Negative Hyperconjugation/Conjugation Interaction, Matthew Flister, Qadir K. Timerghazin

Chemistry Faculty Research and Publications

Aromatic S-nitrosothiols (RSNOs) are of significant interest as potential donors of nitric oxide and related biologically active molecules. Here, we address a number of poorly understood properties of these species via a detailed density functional theory and the natural bond orbital (NBO) investigation of the parent PhSNO molecule. We find that the characteristic perpendicular orientation of the −SNO group relative to the phenyl ring is determined by a combination of the steric factors and the donor–acceptor interactions including, in particular, a cascading orbital interaction involving electron delocalization from the oxygen lone pair to the σ-antibonding S–N orbital and then …

Improving Airplane Touchdown Control By Utilizing The Adverse Elevator Effect, Nihad E. Daidzic Ph.D., Sc.D.

International Journal of Aviation, Aeronautics, and Aerospace

The main objective of this original research article is to understand the short-term dynamic behavior of the transport-category airplane during landing flare elevator control application. Increasing the pitch angle to arrest the sink rate, the elevator will have to produce negative lift to rotate the airplane’s nose upward. This has an immediate adverse effect of initially accelerating airplane downward. A mathematical model of landing flare based on the flat-Earth longitudinal dynamics of rigid airplane was developed which is realistic only on very short time-scales as pitch stiffness and damping were neglected. Pilot control scenarios using impulse and step elevator pull-up …

Public School Science Education And Geographically-Specific Environmental Sustainability Issues: Implications For Social Work Education, Amanda Gallion

Mahurin Honors College Capstone Experience/Thesis Projects

The focus of this project was to examine the educational practices of Kentucky-based public school teachers (grades 4th-8th) related to their efforts to incorporate sustainability into the science classroom and specifically related to the teachers’ focus or lack of focus on karst landscape. The major themes that were analyzed were how educators include this content into their classroom material and how this impacts their students in the area of environmental sustainability. The themes analyzed were: environmental sustainability as a lifestyle choice; education about environmental sustainability, the nexus of family, school, and community; the importance of geographical context in regards to …

Censored Time Series Analysis, Nagham Muslim Mohammad

Electronic Thesis and Dissertation Repository

Environmental data is frequently left or right censored. This is due to the fact that the correct value for observed values that are below or above some threshold or detection point are inaccurate so that it is only known for sure that the true value is below or above that threshold. This is frequently important with water quality and air quality time series data. Interval censoring occurs when the correct values of the data are known only for those values falling above some lower threshold and below some upper threshold. Censoring threshold values may change over time, so multiple censor …

The Brightest Cluster Galaxy In Abell 85: The Largest Core Known So Far, O. López-Cruz, C. Añorve, M. Birkinshaw, D. M. Worrall, H. J. Ibarra-Medel, Wayne A. Barkhouse, J. P. Torres-Papaqui, V. Motta

Physics Faculty Publications

We have found that the brightest cluster galaxy (BCG) in A85, Holm 15A, displays the largest core known so far. Its cusp radius, r γ = 4.57 ± 0.06 kpc (426 ± 006), is more than 18 times larger than the mean for BCGs and 1 kpc larger than A2261-BCG, hitherto the largest-cored BCG. Holm 15A hosts the luminous amorphous radio source 0039-095B and has the optical signature of a LINER. Scaling laws indicate that this core could host a supermassive black hole (SMBH) of mass M • ~ (109-1011) M ☉. We suggest that cores this large represent a …

Dendrochronological Analysis Of The Mcglumphy Homestead

Historic Structures

Dating historical structures using dendrochronology. The Historical Structures collection consists of reports that are the result of dendochronological analysis of timbers from structures in Pennsylvania and Ohio. Contributors: 2014 Climate Change Class

Enhanced Precision In The Analysis Of Randomized Trials With Ordinal Outcomes, Iván Díaz, Elizabeth Colantuoni, Michael Rosenblum

Johns Hopkins University, Dept. of Biostatistics Working Papers

We present a general method for estimating the effect of a treatment on an ordinal outcome in randomized trials. The method is robust in that it does not rely on the proportional odds assumption. Our estimator leverages information in prognostic baseline variables, and has all of the following properties: (i) it is consistent; (ii) it is locally efficient; (iii) it is guaranteed to match or improve the precision of the standard, unadjusted estimator. To the best of our knowledge, this is the first estimator of the causal relation between a treatment and an ordinal outcome to satisfy these properties. We …