136 results on '"Beasley, J."'
Search Results
2. A discrete optimisation approach for target path planning whilst evading sensors
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Beasley, J. E.
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Mathematics - Optimization and Control ,Computer Science - Artificial Intelligence - Abstract
In this paper we deal with a practical problem that arises in military mission planning. The problem is to plan a path for one, or more, agents to reach a target without being detected by enemy sensors. Agents are not passive, rather they can initiate actions which aid evasion. They can knockout sensors. Here to knockout a sensor means to completely disable the sensor. They can also confuse sensors. Here to confuse a sensor means to reduce the probability that the sensor can detect an agent. Agent actions are path dependent and time limited. By path dependent we mean that an agent needs to be sufficiently close to a sensor to knock it out. By time limited we mean that a limit is imposed on how long a sensor is knocked out or confused before it reverts back to its original operating state. The approach adopted breaks the continuous space in which agents move into a discrete space. This enables the problem to be formulated as a zero-one integer program with linear constraints. The advantage of representing the problem in this manner is that powerful commercial software optimisation packages exist to solve the problem to proven global optimality. A heuristic for the problem based on successive shortest paths is also presented. Computational results are presented for a number of randomly generated test problems that are made publicly available.
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- 2021
3. A nonlinear optimisation model for constructing minimal drawdown portfolios
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Valle, C. A. and Beasley, J. E.
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Quantitative Finance - Risk Management ,Mathematics - Optimization and Control ,Quantitative Finance - Portfolio Management - Abstract
In this paper we consider the problem of minimising drawdown in a portfolio of financial assets. Here drawdown represents the relative opportunity cost of the single best missed trading opportunity over a specified time period. We formulate the problem (minimising average drawdown, maximum drawdown, or a weighted combination of the two) as a nonlinear program and show how it can be partially linearised by replacing one of the nonlinear constraints by equivalent linear constraints. Computational results are presented (generated using the nonlinear solver SCIP) for three test instances drawn from the EURO STOXX 50, the FTSE 100 and the S&P 500 with daily price data over the period 2010-2016. We present results for long-only drawdown portfolios as well as results for portfolios with both long and short positions. These indicate that (on average) our minimal drawdown portfolios dominate the market indices in terms of return, Sharpe ratio, maximum drawdown and average drawdown over the (approximately 1800 trading day) out-of-sample period.
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- 2019
4. Quantitative portfolio selection: using density forecasting to find consistent portfolios
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Meade, N., Beasley, J. E., and Adcock, C. J.
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Quantitative Finance - Portfolio Management - Abstract
In the knowledge that the ex-post performance of Markowitz efficient portfolios is inferior to that implied ex-ante, we make two contributions to the portfolio selection literature. Firstly, we propose a methodology to identify the region of risk-expected return space where ex-post performance matches ex-ante estimates. Secondly, we extend ex-post efficient set mathematics to overcome the biases in the estimation of the ex-ante efficient frontier. A density forecasting approach is used to measure the accuracy of ex-ante estimates using the Berkowitz statistic, we develop this statistic to increase its sensitivity to changes in the data generating process. The area of risk-expected return space where the density forecasts are accurate, where ex-post performance matches ex-ante estimates, is termed the consistency region. Under the 'laboratory' conditions of a simulated multivariate normal data set, we compute the consistency region and the estimated ex-post frontier. Over different sample sizes used for estimation, the behaviour of the consistency region is shown to be both intuitively reasonable and to enclose the estimated ex-post frontier. Using actual data from the constituents of the US Dow Jones 30 index, we show that the size of the consistency region is time dependent and, in volatile conditions, may disappear. Using our development of the Berkowitz statistic, we demonstrate the superior performance of an investment strategy based on consistent rather than efficient portfolios.
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- 2019
5. An algorithm for the optimal solution of variable knockout problems
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Beasley, J. E.
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Mathematics - Optimization and Control - Abstract
We consider a class of problems related to variable knockout, where knockout means set a variable to zero. Given an optimisation problem formulated as a zero-one integer program the question we consider in this paper is what might be an appropriate set of variables to knockout of the problem, in order that the optimal solution to the problem that remains after variable knockout has a desired property. This property might be related to the optimal solution value after knockout, or require the problem after knockout to be infeasible. We present an algorithm for the optimal solution of this knockout problem. Computational results are given for an illustrative example based upon shortest path interdiction using publicly available shortest path test problems.
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- 2019
6. Packing a fixed number of identical circles in a circular container with circular prohibited areas
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Lopez, C. O. and Beasley, J. E.
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Mathematics - Optimization and Control - Abstract
In this paper we consider the problem of packing a fixed number of identical circles inside the unit circle container, where the packing is complicated by the presence of fixed size circular prohibited areas. Here the objective is to maximise the radius of the identical circles. We present a heuristic for the problem based upon formulation space search. Computational results are given for six test problems involving the packing of up to 100 circles. One test problem has a single prohibited area made up from the union of circles of different sizes. Four test problems are annular containers, which have a single inner circular prohibited area. One test problem has circular prohibited areas that are disconnected.
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- 2018
7. Packing unequal rectangles and squares in a fixed size circular container using formulation space search
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López, C. O. and Beasley, J. E.
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Mathematics - Optimization and Control - Abstract
In this paper we formulate the problem of packing unequal rectangles/squares into a fixed size circular container as a mixed-integer nonlinear program. Here we pack rectangles so as to maximise some objective (e.g. maximise the number of rectangles packed or maximise the total area of the rectangles packed). We show how we can eliminate a nonlinear maximisation term that arises in one of the constraints in our formulation. We indicate the amendments that can be made to the formulation for the special case where we are maximising the number of squares packed. A formulation space search heuristic is presented and computational results given for publicly available test problems involving up to 30 rectangles/squares. Our heuristic deals with the case where the rectangles are of fixed orientation (so cannot be rotated) and with the case where the rectangles can be rotated through ninety degrees.
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- 2018
8. An optimal algorithm for variable knockout problems
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Beasley, J. E., primary
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- 2023
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9. Packing a fixed number of identical circles in a circular container with circular prohibited areas
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López, C. O. and Beasley, J. E.
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- 2019
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10. Placental expression of imprinted genes varies with sampling site and mode of delivery
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Janssen, A.B., Tunster, S.J., Savory, N., Holmes, A., Beasley, J., Parveen, S.A.R., Penketh, R.J.A., and John, R.M.
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- 2015
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11. Applying recovery biomarkers to calibrate self-report measures of sodium and potassium in the Hispanic Community Health Study/Study of Latinos
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Mossavar-Rahmani, Y, Sotres-Alvarez, D, Wong, W W, Loria, C M, Gellman, M D, Van Horn, L, Alderman, M H, Beasley, J M, Lora, C M, Siega-Riz, A M, Kaplan, R C, and Shaw, P A
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- 2017
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12. Larry Hardage Elliott 1935 - 2014
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Beasley, J. Steven
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- 2015
13. <scp>SNAPSHOT USA</scp> 2020: A second coordinated national camera trap survey of the United States during the <scp>COVID</scp> ‐19 pandemic
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Kays R., Cove M. V., Diaz J., Todd K., Bresnan C., Snider M., Lee T. E., Jasper J. G., Douglas B., Crupi A. P., Weiss K. C. B., Rowe H., Sprague T., Schipper J., Lepczyk C. A., Fantle-Lepczyk J. E., Davenport J., Zimova M., Farris Z., Williamson J., Fisher-Reid M. C., Rezendes D., King S. M., Chrysafis P., Jensen A. J., Jachowski D. S., King K. C., Herrera D. J., Moore S., van der Merwe M., Lombardi J. V., Sergeyev M., Tewes M. E., Horan R. V., Rentz M. S., Driver A., Brandt L. R. S. E., Nagy C., Alexander P., Maher S. P., Darracq A. K., Barr E. G., Hess G., Webb S. L., Proctor M. D., Vanek J. P., Lafferty D. J. R., Hubbard T., Jimenez J. E., McCain C., Favreau J., Fogarty J., Hill J., Hammerich S., Gray M., Rega-Brodsky C. C., Durbin C., Flaherty E. A., Brooke J., Coster S. S., Lathrop R. G., Russell K., Bogan D. A., Shamon H., Rooney B., Rockhill A., Lonsinger R. C., O'Mara M. T., Compton J. A., Barthelmess E. L., Andy K. E., Belant J. L., Petroelje T., Wehr N. H., Beyer D. E., Scognamillo D. G., Schalk C., Day K., Ellison C. N., Ruthven C., Nunley B., Fritts S., Whittier C. A., Neiswenter S. A., Pelletier R., DeGregorio B. A., Kuprewicz E. K., Davis M. L., Baruzzi C., Lashley M. A., McDonald B., Mason D., Risch D. R., Allen M. L., Whipple L. S., Sperry J. H., Alexander E., Wolff P. J., Hagen R. H., Mortelliti A., Bolinjcar A., Wilson A. M., Van Norman S., Powell C., Coletto H., Schauss M., Bontrager H., Beasley J., Ellis-Felege S. N., Wehr S. R., Giery S. T., Pekins C. E., LaRose S. H., Revord R. S., Hansen C. P., Hansen L., Millspaugh J. J., Zorn A., Gerber B. D., Rezendes K., Adley J., Sevin J., Green A. M., Sekercioglu C. H., Pendergast M. E., Mullen K., Bird T., Edelman A. J., Romero A., O'Neill B. J., Schmitz N., Vandermus R. A., Alston J. M., Kuhn K. M., Hasstedt S. C., Lesmeister D. B., Appel C. L., Rota C., Stenglein J. L., Anhalt-Depies C., Nelson C. L., Long R. A., Remine K. R., Jordan M. J., Elbroch L. M., Bergman D., Cendejas-Zarelli S., Sager-Fradkin K., Conner M., Morris G., Parsons E., Hernandez-Yanez H., McShea W. J., Kays, R., Cove, M. V., Diaz, J., Todd, K., Bresnan, C., Snider, M., Lee, T. E., Jasper, J. G., Douglas, B., Crupi, A. P., Weiss, K. C. B., Rowe, H., Sprague, T., Schipper, J., Lepczyk, C. A., Fantle-Lepczyk, J. E., Davenport, J., Zimova, M., Farris, Z., Williamson, J., Fisher-Reid, M. C., Rezendes, D., King, S. M., Chrysafis, P., Jensen, A. J., Jachowski, D. S., King, K. C., Herrera, D. J., Moore, S., van der Merwe, M., Lombardi, J. V., Sergeyev, M., Tewes, M. E., Horan, R. V., Rentz, M. S., Driver, A., Brandt, L. R. S. E., Nagy, C., Alexander, P., Maher, S. P., Darracq, A. K., Barr, E. G., Hess, G., Webb, S. L., Proctor, M. D., Vanek, J. P., Lafferty, D. J. R., Hubbard, T., Jimenez, J. E., Mccain, C., Favreau, J., Fogarty, J., Hill, J., Hammerich, S., Gray, M., Rega-Brodsky, C. C., Durbin, C., Flaherty, E. A., Brooke, J., Coster, S. S., Lathrop, R. G., Russell, K., Bogan, D. A., Shamon, H., Rooney, B., Rockhill, A., Lonsinger, R. C., O'Mara, M. T., Compton, J. A., Barthelmess, E. L., Andy, K. E., Belant, J. L., Petroelje, T., Wehr, N. H., Beyer, D. E., Scognamillo, D. G., Schalk, C., Day, K., Ellison, C. N., Ruthven, C., Nunley, B., Fritts, S., Whittier, C. A., Neiswenter, S. A., Pelletier, R., Degregorio, B. A., Kuprewicz, E. K., Davis, M. L., Baruzzi, C., Lashley, M. A., Mcdonald, B., Mason, D., Risch, D. R., Allen, M. L., Whipple, L. S., Sperry, J. H., Alexander, E., Wolff, P. J., Hagen, R. H., Mortelliti, A., Bolinjcar, A., Wilson, A. M., Van Norman, S., Powell, C., Coletto, H., Schauss, M., Bontrager, H., Beasley, J., Ellis-Felege, S. N., Wehr, S. R., Giery, S. T., Pekins, C. E., Larose, S. H., Revord, R. S., Hansen, C. P., Hansen, L., Millspaugh, J. J., Zorn, A., Gerber, B. D., Rezendes, K., Adley, J., Sevin, J., Green, A. M., Sekercioglu, C. H., Pendergast, M. E., Mullen, K., Bird, T., Edelman, A. J., Romero, A., O'Neill, B. J., Schmitz, N., Vandermus, R. A., Alston, J. M., Kuhn, K. M., Hasstedt, S. C., Lesmeister, D. B., Appel, C. L., Rota, C., Stenglein, J. L., Anhalt-Depies, C., Nelson, C. L., Long, R. A., Remine, K. R., Jordan, M. J., Elbroch, L. M., Bergman, D., Cendejas-Zarelli, S., Sager-Fradkin, K., Conner, M., Morris, G., Parsons, E., Hernandez-Yanez, H., and Mcshea, W. J.
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United State ,Carnivora ,Wild ,mammal ,Animals, Wild ,Didelphimorphia ,species distribution modeling ,Birds ,Bird ,camera traps ,biodiversity ,biogeography ,Cetartiodactyla ,Lagomorpha ,mammals ,occupancy modeling ,Animals ,Humans ,Mammals ,Pandemics ,United States ,COVID-19 ,Ecology, Evolution, Behavior and Systematics ,Pandemic ,camera trap ,Animal ,Human - Abstract
Managing wildlife populations in the face of global change requires regular data on the abundance and distribution of wild animals, but acquiring these over appropriate spatial scales in a sustainable way has proven challenging. Here we present the data from Snapshot USA 2020, a second annual national mammal survey of the USA. This project involved 152 scientists setting camera traps in a standardized protocol at 1485 locations across 103 arrays in 43 states for a total of 52,710 trap-nights of survey effort. Most (58) of these arrays were also sampled during the same months (September and October) in 2019, providing a direct comparison of animal populations in 2 years that includes data from both during and before the COVID-19 pandemic. All data were managed by the eMammal system, with all species identifications checked by at least two reviewers. In total, we recorded 117,415 detections of 78 species of wild mammals, 9236 detections of at least 43 species of birds, 15,851 detections of six domestic animals and 23,825 detections of humans or their vehicles. Spatial differences across arrays explained more variation in the relative abundance than temporal variation across years for all 38 species modeled, although there are examples of significant site-level differences among years for many species. Temporal results show how species allocate their time and can be used to study species interactions, including between humans and wildlife. These data provide a snapshot of the mammal community of the USA for 2020 and will be useful for exploring the drivers of spatial and temporal changes in relative abundance and distribution, and the impacts of species interactions on daily activity patterns. There are no copyright restrictions, and please cite this paper when using these data, or a subset of these data, for publication.
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- 2022
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14. Factor neutral portfolios
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Valle, C. A., Meade, N., and Beasley, J. E.
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- 2015
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15. An optimisation approach to constructing an exchange-traded fund
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Valle, C. A., Meade, N., and Beasley, J. E.
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- 2015
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16. Decreasing Phosphorus Fertility to Reduce Sweetpotato Root Growth During Container-grown Transplant Production
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Rouse, L., primary, Beasley, J., additional, LaBonte, D., additional, and Kuehny, J., additional
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- 2022
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17. Nicotianamine-Chelated Iron Positively Affects Iron Status, Intestinal Morphology and Microbial Populations In Vivo (Gallus Gallus)
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Beasley, J, Johnson, A, Tako, E, Beasley, J, Johnson, A, and Tako, E
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Objectives Iron (Fe) fortification involves low dose delivery of bioavailable Fe fortificants to food products during manufacture (or point-of-use) and is an effective population-based strategy to combat human Fe deficiencies that affect over 2 billion people globally. Iron fortification of wheat flour is now mandatory in 75 countries worldwide, however, the tendency of Fe fortificants to oxidize and cause undesired organoleptic and sensory properties pose significant challenges. Nicotianamine (NA) is a natural chelator of Fe and zinc (Zn) in higher plants and NA-chelated Fe is highly bioavailable in vitro. In graminaceous plants NA serves as the biosynthetic precursor to 2′ -deoxymugineic acid (DMA), a related Fe chelator and enhancer of Fe bioavailability, and increased NA/DMA biosynthesis has proved an effective Fe biofortification strategy in several cereal crops. In this study we aimed to investigate the impact of NA-chelated Fe on Fe status and gastrointestinal health in vivo. Methods We utilized the versatile chicken (Gallus gallus) model to assess NA-chelated Fe when delivered to chickens through intraamniotic administration (short-term exposure) or over a period of six weeks as part of a biofortified wheat diet containing increased NA, Fe, Zn and DMA (long-term exposure). Results Following short-term exposure, chickens that received an NA-chelated Fe treatment demonstrated significantly increased blood serum Fe, intestinal goblet cell number, and abundance of Bifidobacterium relative to chickens that received control Fe treatments (either EDTA-chelated Fe or unchelated Fe). Following long-term exposure, chickens that consumed the biofortified diet had significantly increased liver Fe, liver and muscle glycogen, and intestinal goblet cell number, as well as significantly different microbial population diversities (including a greater abundance of Bifidobacterium and Lactobacillus) relative to chickens that consumed the control diet. Conclusions Taken togethe
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- 2021
18. Erratum: Applying recovery biomarkers to calibrate self-report measures of sodium and potassium in the hispanic community health study/study of latinos
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Mossavar-Rahmani, Y, Sotres-Alvarez, D, Wong, W W, Loria, C M, Gellman, M D, Van Horn, L, Alderman, M H, Beasley, J M, Lora, C M, Siega-Riz, A M, Kaplan, R C, and Shaw, P A
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- 2017
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19. Signatures for torque variation in wheat dough structure are affected by enzymatic treatments and heating
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Harati, H., Bekes, F., Howell, K., Noonan, S., Florides, C., Beasley, J., Diepeveen, D., Appels, R., Harati, H., Bekes, F., Howell, K., Noonan, S., Florides, C., Beasley, J., Diepeveen, D., and Appels, R.
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Molecular interactions in dough are poorly defined but affect final product usage. By monitoring changes in torque as dough is formed, we identified 80–85 °C as a gateway stage determining dough collapse during the mixing/heating process. We propose that this phenomenon is a diagnostic signature linked to integral features of dough complexes formed by some wheat varieties but not others. We found the dough at 80–85 °C was stabilized by increasing the starting bowl temperature (before a standard linear increase in temperature) of the mixing process and demonstrated the significance of specific macromolecular interactions that are formed early in the mixing process. Enzymes including papain, alpha-amylase, glucose oxidase and phytase stabilized dough structure to facilitate transition through the gateway temperatures between 80 and 85 °C. Our results show that if the dough initially formed a protein-starch complex that was too large, instability and collapse of the structure can occur later.
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- 2020
20. Effects of human presence on African mammal waterhole attendance and temporal activity patterns.
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Patterson, J. R., Ndlovu, N., Beasley, J. C., and Périquet, S.
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MAMMAL behavior , *WILDLIFE monitoring , *ANTHROPOGENIC effects on nature , *ECOTOURISM , *BIOLOGICAL extinction , *PREDATION , *ANIMAL populations - Abstract
Human impacts on the environment and wildlife populations are increasing globally, threatening thousands of species with extinction. While wildlife‐based tourism is beneficial for educating tourists, generating income for conservation efforts, and providing local employment, more information is needed to understand how this industry may impact wildlife. In this study, we used motion‐activated cameras at 12 waterholes on a private game reserve in northern Namibia to determine if the presence of humans and permanent infrastructure affected mammal visits by examining their (1) number of visits, (2) time spent, and (3) diel activity patterns. Our results revealed no differences in the number of visits based on human presence for any of the 17 mammal species studied. However, giraffes (Giraffe camelopardalis) spent more time at waterholes before observer presence compared to during. Additionally, several species changed diel activity patterns when human observers were present. Notably, several carnivore and ungulate species increased overlap in their activity patterns during periods while humans were present relative to when humans were absent. These modifications of mammal temporal activity patterns due to human presence could eventually lead to changes in community structure and trophic dynamics because of altered predator–prey interactions. As humans continue to expand into wildlife habitats, and wildlife‐based tourism increases globally, it is imperative that we fully understand the effects of anthropogenic pressures on mammal behavior. Monitoring of wildlife behavioral changes in response to human activity is crucial to further develop wildlife tourism opportunities in a way that optimizes the impact of conservation goals. [ABSTRACT FROM AUTHOR]
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- 2024
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21. Lateral Epicondylitis and the Efficacy of a Long Arm Orthosis: A Case Series
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Beasley, J., primary, Floyd-Slabaugh, C., additional, Repasy, H., additional, Tanja, J., additional, Phillips, T., additional, Baazov, B., additional, Brundage, K., additional, and Rudenga, C., additional
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- 2019
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22. Incorporating Poultry Litter Ash as a Pre-plant Fertilizer to Reduce Nutrient Leaching during Bermudagrass Establishment
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Vance, Crystal, primary, Beasley, J., additional, Gaston, L., additional, Macal, J., additional, and Sanders, K., additional
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- 2019
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23. Silvopasture Switchgrass Fertilized with Poultry Litter: Nutrient Removal, Soil Fertility, and Runoff Water Quality
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Gaston, L., primary, Blazier, M., additional, Beasley, J., additional, Dodla, S., additional, Felicien, W., additional, and Clason, T., additional
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- 2019
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24. Abstract P5-10-01: Using whole genome sequencing and somatic mutation signatures to unravel insight into familial breast cancer aetiology
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Simpson, P, primary, Nones, K, additional, Johnson, J, additional, Newell, F, additional, Patch, A-M, additional, Thorne, H, additional, Kazakoff, S, additional, De Luca, X, additional, Parsons, M, additional, Ferguson, K, additional, Reid, L, additional, McCart Reed, A, additional, Srihari, S, additional, Lakis, V, additional, Davidson, A, additional, Mukhopadhyay, P, additional, Holmes, O, additional, Xu, Q, additional, Wood, S, additional, Leonard, C, additional, Beasley, J, additional, Degasperi, A, additional, Nik-Zainal, S, additional, Ragan, M, additional, Spurdle, A, additional, Khanna, KK, additional, Lakhani, S, additional, Pearson, J, additional, Chenevix-Trench, G, additional, and Waddell, N, additional
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- 2019
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25. Packing a fixed number of identical circles in a circular container with circular prohibited areas
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López, C. O., primary and Beasley, J. E., additional
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- 2018
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26. Если не стрелять: численность, территориальная структура и хищничество волка в зимний период 2016-2017 гг. в зоне отчуждения Чернобыльской АЭС
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Beasley, J., Sсhlichting, P., Webster, S., and Love, C.
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плотность популяции ,популяция волка ,копытные животные ,волк ,численность популяции - Published
- 2017
27. Acute effects of contract-relax stretching, static stretching and isometric contractions on muscle-tendon mechanics
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Anthony Kay, Husbands-Beasley, J., and Blazevich, Anthony J.
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musculoskeletal system - Abstract
Maximum joint range of motion (ROM) and resistance to joint rotation within that range (i.e. resistance to stretch) are important physical characteristics that influence the capacity to perform activities of daily living and athletic tasks [1], and are affected considerably by aging and disease [2]. The loading characteristics of different muscle stretching techniques likely influence the specific mechanisms responsible for acute increases in range of motion (ROM). Identifying mechanisms allows the determination a priori as to whether these interventions might be useful in different clinical populations, why such stretch interventions elicit different responses in different individuals, and to optimize/improve the methodology of, and response to, the stretch technique. Therefore, the effects of contract-relax proprioceptive neuromuscular facilitation (CR) stretching, static stretching (SS) and maximal isometric contraction (Iso) interventions were studied in 17 healthy human volunteers. Methods: Passive ankle moment was recorded on an isokinetic dynamometer with electromyographic (EMG) recording from the triceps surae, simultaneous real-time motion analysis, and ultrasound imaging recorded gastrocnemius medialis muscle and Achilles tendon elongation. The subjects then performed each intervention randomly on separate days before reassessment. The SS condition included 4 x 15 s plantar flexor stretches with 15 s rest between stretches, the CR condition included 10 s stretches followed immediately by a 5-s ramped maximal isometric plantar flexor contraction in a fully stretched position, repeated four times giving a total duration of 60 s; identical to the SS condition. The Iso condition included 4 x 5 s ramped maximal isometric plantar flexor contractions performed in the anatomical position, with 15 s rest between contractions. Results: Significant increases in dorsiflexion ROM (2.5-5.3°; P < 0.01) and reductions in whole muscle-tendon stiffness (10.1-21.0%; P < 0.01) occurred in all conditions, with significantly greater changes detected following CR (P < 0.05). Significant reductions in tendon stiffness (see Figure 1, A) were observed after CR and Iso (17.7-22.1%; P < 0.01) but not after SS (P > 0.05), while significant reductions in muscle stiffness (see Figure 1, B) occurred after CR and SS (16.0-20.5%; P < 0.01) but not after Iso (P > 0.05). Increases in peak passive moment (stretch tolerance) occurred after Iso (6.8%; P < 0.05), CR (10.6%; P = 0.08) and SS (5.2%; P = 0.08); no difference in the changes between conditions was found (P > 0.05). Significant correlations (rs = 0.69-0.82; P < 0.01) were observed between the changes in peak passive moment and maximum ROM in all conditions. Conclusion: While similar ROM increases occurred after isometric contractions and static stretching, changes in muscle and tendon stiffness were distinct. The concomitant reductions in muscle and tendon stiffness after contract-relax stretching suggest a broader adaptive mechanical response that likely explains its superior efficacy to acutely increase ROM. These are the first data to confirm that acute changes in tendon stiffness may contribute to PNF stretching’s superior efficacy to increase ROM, above other stretching modes. However, while mechanical changes appear tissue-specific between interventions, significant correlations between the change in peak passive moment and the change in ROM were observed in all conditions, indicative of a neurological adaptation (i.e. increased stretch tolerance) also being important for the acute increases in ROM. The reduction in tendon stiffness and increase in ROM detected following the Iso condition have important methodological implications as these data indicate that the performance of contractions ‘on stretch’ during PNF stretching may not be needed. Modifying PNF stretching to perform the contraction phase in the anatomical, rather than highly stretched position, removes the need for partner assistance, decreases the likelihood of inducing pain, tissue damage and muscle strain injury during the technique, which may enhance PNF’s suitability and practicality for athletic and clinical populations.
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- 2015
28. Identification and molecular characterization of the nicotianamine synthase gene family in bread wheat
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Bonneau, J, Baumann, U, Beasley, J, Li, Y, Johnson, AAT, Bonneau, J, Baumann, U, Beasley, J, Li, Y, and Johnson, AAT
- Abstract
Nicotianamine (NA) is a non-protein amino acid involved in fundamental aspects of metal uptake, transport and homeostasis in all plants and constitutes the biosynthetic precursor of mugineic acid family phytosiderophores (MAs) in graminaceous plant species. Nicotianamine synthase (NAS) genes, which encode enzymes that synthesize NA from S-adenosyl-L-methionine (SAM), are differentially regulated by iron (Fe) status in most plant species and plant genomes have been found to contain anywhere from 1 to 9 NAS genes. This study describes the identification of 21 NAS genes in the hexaploid bread wheat (Triticum aestivum L.) genome and their phylogenetic classification into two distinct clades. The TaNAS genes are highly expressed during germination, seedling growth and reproductive development. Fourteen of the clade I NAS genes were up-regulated in root tissues under conditions of Fe deficiency. Protein sequence analyses revealed the presence of endocytosis motifs in all of the wheat NAS proteins as well as chloroplast, mitochondrial and secretory transit peptide signals in four proteins. These results greatly expand our knowledge of NAS gene families in graminaceous plant species as well as the genetics underlying Fe nutrition in bread wheat.
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- 2016
29. Psychiatric hospitalisation among individuals with intellectual disability referred to the START crisis intervention and prevention program
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Kalb, L. G., primary, Beasley, J., additional, Klein, A., additional, Hinton, J., additional, and Charlot, L., additional
- Published
- 2016
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30. Effective Conservative Treatments for De Quervain's Tenosynovitis: A Retrospective Study
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Lunsford, D., primary, Dolislager, C., additional, Krenselewski, B., additional, Oosting, K., additional, Beasley, J., additional, Phillips, T., additional, and Leiras, C., additional
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- 2016
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31. Clinically Effective Conservative Treatments for Lateral Epicondylitis: A Retrospective Study
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Leiras, C., primary, Collins, K., additional, Jordan, A., additional, Petersen, A., additional, Lunsford, D., additional, Phillips, T., additional, and Beasley, J., additional
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- 2016
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32. Range of Motion Outcomes of an Alternative Protocol for Clostridium Histoliticum Collagenease Injection and Occupational Therapy
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Heathfield, A., primary, Dupre, K., additional, Rosel, M., additional, Beasley, J., additional, Leiras, C., additional, and Mead, M., additional
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- 2016
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33. Concurrent Validity of Goniometric and 3D Motion Capture Measurements of the Hand and Their Effects on a Model of Finger Functionality for Clinical Assessment
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Leitkam, S., primary, Bush, T.R., additional, Beasley, J., additional, and Buschman, J., additional
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- 2016
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34. How Can Joint Protection Apply to Grocery Shopping?; An Evaluation to Determine the Optimal Handle Diameter of Shopping Carts.
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Nottelmann, K., primary, Woods, F., additional, Pittsley, M., additional, Beasley, J., additional, Ashby, B., additional, and Anderson, K., additional
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- 2016
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35. Melding kin structure and demography to elucidate source and sink habitats in fragmented landscapes
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Beasley, J. C., primary, Dharmarajan, G., additional, and Rhodes, O. E., additional
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- 2015
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36. Effects of Primary Care Team Social Networks on Quality of Care and Costs for Patients With Cardiovascular Disease
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Mundt, M. P., primary, Gilchrist, V. J., additional, Fleming, M. F., additional, Zakletskaia, L. I., additional, Tuan, W.-J., additional, and Beasley, J. W., additional
- Published
- 2015
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37. Biomarker-predicted sugars intake compared with self-reported measures in US Hispanics/Latinos: results from the HCHS/SOL SOLNAS study.
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Beasley, J M, Jung, M, Tasevska, N, Wong, W W, Siega-Riz, A M, Sotres-Alvarez, D, Gellman, M D, Kizer, J R, Shaw, P A, Stamler, J, Stoutenberg, M, Van Horn, L, Franke, A A, Wylie-Rosett, J, and Mossavar-Rahmani, Y
- Abstract
Objective: Measurement error in self-reported total sugars intake may obscure associations between sugars consumption and health outcomes, and the sum of 24 h urinary sucrose and fructose may serve as a predictive biomarker of total sugars intake.Design: The Study of Latinos: Nutrition & Physical Activity Assessment Study (SOLNAS) was an ancillary study to the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) cohort. Doubly labelled water and 24 h urinary sucrose and fructose were used as biomarkers of energy and sugars intake, respectively. Participants' diets were assessed by up to three 24 h recalls (88 % had two or more recalls). Procedures were repeated approximately 6 months after the initial visit among a subset of ninety-six participants.Setting: Four centres (Bronx, NY; Chicago, IL; Miami, FL; San Diego, CA) across the USA.Subjects: Men and women (n 477) aged 18-74 years.Results: The geometric mean of total sugars was 167·5 (95 % CI 154·4, 181·7) g/d for the biomarker-predicted and 90·6 (95 % CI 87·6, 93·6) g/d for the self-reported total sugars intake. Self-reported total sugars intake was not correlated with biomarker-predicted sugars intake (r=-0·06, P=0·20, n 450). Among the reliability sample (n 90), the reproducibility coefficient was 0·59 for biomarker-predicted and 0·20 for self-reported total sugars intake.Conclusions: Possible explanations for the lack of association between biomarker-predicted and self-reported sugars intake include measurement error in self-reported diet, high intra-individual variability in sugars intake, and/or urinary sucrose and fructose may not be a suitable proxy for total sugars intake in this study population. [ABSTRACT FROM AUTHOR]- Published
- 2016
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38. The Tallahassee: A Gulf Formational Period Artifact.
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Beasley, J. Steven
- Subjects
- *
ANTIQUITIES , *BLADES (Archaeology) , *PREHISTORIC tools , *ARCHAEOLOGICAL finds - Abstract
The article focuses on description of the age of Tallahassee that has been believed to be variant of Dalton and mentions Tallahassee points associated with Weeden Island artifacts. Topics discussed include serrations extended from tip of blade and within the base, presence of midden of black soil with Woodland occupation zone and points of Tallahassee compared to Late Paleo period Dalton points.
- Published
- 2022
39. The influence of environmental factors on the detection and quantification of SARS-CoV-2 variants in dormitory wastewater at a primarily undergraduate institution.
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Brooks C, Brooks S, Beasley J, Valley J, Opata M, Karatan E, and Bleich R
- Abstract
Testing for the causative agent of coronavirus disease 2019 (COVID-19), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been crucial in tracking disease spread and informing public health decisions. Wastewater-based epidemiology has helped to alleviate some of the strain of testing through broader, population-level surveillance, and has been applied widely on college campuses. However, questions remain about the impact of various sampling methods, target types, environmental factors, and infrastructure variables on SARS-CoV-2 detection. Here, we present a data set of over 800 wastewater samples that sheds light on the influence of a variety of these factors on SARS-CoV-2 quantification using droplet digital PCR (ddPCR) from building-specific sewage infrastructure. We consistently quantified a significantly higher number of copies of virus per liter for the target nucleocapsid 2 (N2) compared to nucleocapsid 1 (N1), regardless of the sampling method (grab vs composite). We further show some dormitory-specific differences in SARS-CoV-2 abundance, including correlations to dormitory population size. Environmental variables like precipitation and temperature show little to no impact on virus load, with the exception of higher temperatures for grab sample data. We observed significantly higher gene copy numbers of the Omicron variant than the Delta variant within ductile iron pipes but no difference in nucleocapsid abundance (N1 or N2) across the three different sewage pipe types in our data set. Our results indicate that contextual variables should be considered when interpreting wastewater-based epidemiological data., Importance: Testing for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of coronavirus disease 2019 (COVID-19), has been crucial in tracking the spread of the virus and informing public health decisions. SARS-CoV-2 viral RNA is shed by symptomatic and asymptomatic infected individuals, allowing its genetic material to be detected and quantified in wastewater. Here, we used wastewater-based epidemiology to measure SARS-CoV-2 viral RNA from several dormitories on the Appalachian State University campus and examined the impact of sampling methods, target types, environmental factors, and infrastructure variables on quantification. Changes in the quantification of SARS-CoV-2 were observed based on target type, as well as trends for the quantification of the Delta and Omicron variants by sampling method. These results highlight the value of applying the data-inquiry practices used in this study to better contextualize wastewater sampling results.
- Published
- 2025
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40. 90 Sr and 137 Cs distribution in Chornobyl forests: 30 years after the nuclear accident.
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Holiaka D, Levchuk S, Kashparov V, Yoschenko V, Hurtevent P, Coppin F, and Beasley JC
- Abstract
The primary aim of this study was to quantify patterns in the distribution of
90 Sr and137 Cs activity in pine (Pinus sylvestris L.: 18 sites) and birch (Betula pendula Roth.: 2 sites) forests within the Chornobyl exclusion zone, 30 years after the Chornobyl nuclear power plant (NPP) accident (1986). To achieve this, radionuclide activity concentrations were measured in the mineral and organic soil horizons, the green forest floor (grasses, mosses, and lichens), and trunk wood in forest plots dominated by either pine or birch trees.Our results showed that the geometric mean of the90 Sr aggregated transfer factors from mineral soil to the trunk wood of pine trees (Tag ) for Scots pines was 24 x 10-3 m2 kg-1 , which is an order of magnitude higher than the IAEA Handbook (2010)reference value (1.7 x 10-3 m2 kg-1 ), which were based on studies conducted after the Kyshtym accident (Ural region, Russia) and in the first years following the Chornobyl accident (Ukraine and Belarus). The observations suggest that the above-ground biomass (soil organic layers, green forest floor, and trees) may contribute more to the90 Sr inventory than the mineral soil at the stand level. In contrast, the137 Cs Tag values for pine and birch stands were consistent with those reported in the literature (ranging from 0.1 to 10 and 0.5-1.1 x 10-3 m2 kg-1 , respectively). Both results align with the known bioavailability of radionuclides from previous studies: low for137 Cs, leading to limited soil depth migration (less than 30 cm in the mineral horizon), and higher for90 Sr, resulting in greater soil migration (up to 1 m in the mineral horizon). This study highlighted significant correlations between the radionuclides' activity concentrations in the litter layers and their content in the trunk wood of pine trees., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2025 Elsevier Ltd. All rights reserved.)- Published
- 2025
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41. Sex differences in mitochondrial free-carnitine levels in subjects at-risk and with Alzheimer's disease in two independent study cohorts.
- Author
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Bigio B, Lima-Filho RAS, Barnhill O, Sudo FK, Drummond C, Assunção N, Vanderborght B, Beasley J, Young S, Korman A, Jones DR, Sultzer DL, Ferreira ST, Mattos P, Head E, Tovar-Moll F, De Felice FG, Lourenco MV, and Nasca C
- Abstract
A major challenge in the development of more effective therapeutic strategies for Alzheimer's disease (AD) is the identification of molecular mechanisms linked to specific pathophysiological features of the disease. Importantly AD has a two-fold higher incidence in women than men and a protracted prodromal phase characterized by amnestic mild-cognitive impairment (aMCI) suggesting that biological processes occurring early can initiate vulnerability to AD. Here, we used a sample of 125 subjects from two independent study cohorts to determine the levels in plasma (the most accessible specimen) of two essential mitochondrial markers acetyl-L-carnitine (LAC) and its derivative free-carnitine motivated by a mechanistic model in rodents in which targeting mitochondrial metabolism of LAC leads to the amelioration of cognitive function and boosts epigenetic mechanisms of gene expression. We report a sex-specific deficiency in free-carnitine levels in women with aMCI and early-AD compared to cognitively healthy controls; no change was observed in men. We also replicated the prior finding of decreased LAC levels in both women and men with AD, supporting the robustness of the study samples assayed in our new study. The magnitude of the sex-specific free-carnitine deficiency reflected the severity of cognitive dysfunction and held in two study cohorts. Furthermore, patients with the lower free-carnitine levels showed higher β-amyloid(Aβ) accumulation and t-Tau levels assayed in cerebrospinal fluid (CSF). Computational analyses showed that the mitochondrial markers assayed in plasma are at least as accurate as CSF measures to classify disease status. Together with the mechanistic platform in rodents, these translational findings lay the groundwork to create preventive individualized treatments targeting sex-specific changes in mitochondrial metabolism that may be subtle to early cognitive dysfunction of AD risk., Competing Interests: Competing interests: The authors declare no competing interests., (© 2024. The Author(s), under exclusive licence to Springer Nature Limited.)
- Published
- 2025
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42. The Corbett Targeted Coin Test demonstrated good to moderate reliability as compared to other standardized dexterity assessments.
- Author
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Stout L, Beasley J, Jackson S, Kagande A, Range A, Corder S, Floyd-Slabaugh C, and Anderson K
- Abstract
Competing Interests: Declaration of Competing Interest The authors whose names are listed above certify that they have no business affiliations with or involvement in the Corbett Targeted Coin Test or financial interest in the subject matter or materials discussed in this manuscript.
- Published
- 2025
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43. Reducing Phosphorus Loss in Short-Cycle Horticultural Production Using Activated Aluminum-Amended Substrates and Modified Fertigation Practices.
- Author
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Abdi DE, Beasley J, and Fields J
- Abstract
To support growth, short-cycle horticultural crops require readily available nutrients. However, this often leads to nutrient leaching. Implementing best management practices in production decisions like incorporating fertilizer retaining amendments to substrates or modifying fertilization programs can mitigate nutrient losses to the environment and associated costs. This study examined using an activated aluminum (AA) material as a substrate amendment to retain phosphorus (P) within containers while also assessing methods to reduce P fertilization in Tagetes production over a six-week production cycle. A commercial peat moss substrate (PL) pre-loaded with nutrients was amended with AA, enabling comparisons between substrates with and without AA. Enhanced fertilizer practices involved supplementing the initial nutrients by applying a weekly fertigation solution including nitrogen and potassium over the six weeks, but P for either 0, 2, 4, or 6 weeks. The incorporation of AA significantly reduced P leaching losses by 89.5-97.7%, compared to the PL substrates receiving P the entire six weeks. Regardless of substrate or fertilizer management, all Tagetes had equivalent sizes (growth index) and aboveground biomass. The results indicate that amending substrates with AA and/or reducing additional P inputs are effective strategies to minimize P leaching without compromising Tagetes quality.
- Published
- 2024
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- View/download PDF
44. Ironstone and red mud barriers to reduce subsurface movement of soil phosphorus.
- Author
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Smith S, Gaston L, Beasley J, Wang J, Padilla J, and Sun W
- Subjects
- Soil Pollutants, Phosphorus chemistry, Phosphorus analysis, Soil chemistry
- Abstract
Loss of phosphorus in seepage may contribute to eutrophication of downstream water bodies. This study examined the potential use of pedogenic ironstone and untreated red mud (bauxite refining residue) as P sorbents in a permeable reactive barrier (PRB) to mitigate such loss. Effects of ironstone and red mud on P sorption (batch), transport (columns), saturated hydraulic conductivity (K
S ), and growth of common bermudagrass (Cynodon dactylon; greenhouse) were examined. Both materials had sorption maxima of ∼30 mmol P kg-1 or about five times that of a P-enriched sandy soil; however, sorption by red mud greatly increased with decreasing pH. Transport of P through columns of ironstone and red mud (diluted with nonreactive sand) was similar and slower compared to soil + sand. However, when red mud was mixed with soil, increased sorption at lower pH resulted in greater P retention compared to ironstone + soil (76% vs. 13%). Although addition of ironstone to soil up to 20% did not reduce KS , red mud at even 5% did. Soil amendment with red mud increased bermudagrass growth and P uptake. Given long-term neutralization of red mud in an acidic soil and increased P sorption, it may be suitable in a PRB if incorporated at a low rate and/or co-incorporated with a coarser material., (© 2024 The Author(s). Journal of Environmental Quality © 2024 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.)- Published
- 2024
- Full Text
- View/download PDF
45. A DNA barcoding framework for taxonomic verification in the Darwin Tree of Life Project.
- Author
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Twyford AD, Beasley J, Barnes I, Allen H, Azzopardi F, Bell D, Blaxter ML, Broad G, Campos-Dominguez L, Choonea D, Crowley L, Cuber P, Cunliffe M, Dombrowski A, Douglas B, Forrest LL, Gaya E, Greeves C, Griffin C, Harley J, Hart ML, Holland PWH, Hollingsworth PM, Januszczak I, Jones A, Kersey P, Kilias E, Lawniczak MKN, Lewis OT, Mian S, Minotto A, Misra R, Mulhair PO, Pereira da Conceicoa L, Price BW, Salatino S, Shaw F, Sivell O, Sivess L, Uhl R, and Woof K
- Abstract
Biodiversity genomics research requires reliable organismal identification, which can be difficult based on morphology alone. DNA-based identification using DNA barcoding can provide confirmation of species identity and resolve taxonomic issues but is rarely used in studies generating reference genomes. Here, we describe the development and implementation of DNA barcoding for the Darwin Tree of Life Project (DToL), which aims to sequence and assemble high quality reference genomes for all eukaryotic species in Britain and Ireland. We present a standardised framework for DNA barcode sequencing and data interpretation that is then adapted for diverse organismal groups. DNA barcoding data from over 12,000 DToL specimens has identified up to 20% of samples requiring additional verification, with 2% of seed plants and 3.5% of animal specimens subsequently having their names changed. We also make recommendations for future developments using new sequencing approaches and streamlined bioinformatic approaches., Competing Interests: No competing interests were disclosed., (Copyright: © 2024 Twyford AD et al.)
- Published
- 2024
- Full Text
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46. Adult norms for the Corbett Targeted Coin Test.
- Author
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Beasley J, Cook L, Eidson C, Hanna S, Keilman E, Lidgard J, Rhodes V, Vetter M, Wols K, Anderson K, and Bacon-Baguley T
- Abstract
Study Design: Clinical measurement INTRODUCTION: Dexterity is important for daily activities. The Corbett Targeted Coin Test (CTCT) measures dexterity with palm-to-finger translation and proprioceptive target placement, but lacks established norms., Purpose of the Study: To establish norms for the CTCT with healthy adult subjects., Methods: The inclusion criteria consisted of participants that were community dwelling, non-institutionalized, able to make a fist with both hands, perform finger-to-palm translation of twenty coins, and be at least 18 years of age. CTCT standardized testing procedures were followed. Quality of performance (QoP) scores were determined by speed in seconds and number of coin drops (each a 5-second penalty). QoP was summarized within each age, gender and hand dominance subgroup using the mean, median, minimum, and maximum. Correlation coefficients were computed for relationships between age and QoP, and between handspan and QoP., Results: Of the 207 individuals who participated, 131 were females and 76 males with an age range of 18-86 and mean age of 37.16. Individual QoP scores ranged from 13.8 to 105.3 seconds, with median scores ranging from 28.7 to 53.3 seconds. The mean for males was 37.5 seconds for the dominant hand (range 15.7-105.3) and 42.3 seconds (range 17.9.-86.8) for the non-dominant hand. The mean for females was 34.7 seconds for the dominant hand (range 14.8-67.0) and 38.6 seconds (range 13.8.-82.7) for the non-dominant hand. Lower QoP scores indicate a faster and/or more accurate dexterity performance. Females showed better median QoP for most age groups. The best median QoP scores were seen in the 30-39 and 40-49 age ranges., Discussion: Our study agrees to some extent with other research that reported dexterity decreases with age, and increases with smaller hand spans., Conclusion: Normative data for the CTCT can be a guide for clinicians evaluating and monitoring patient dexterity with palm-to-finger translation and proprioceptive target placement., (Copyright © 2022. Published by Elsevier Inc.)
- Published
- 2023
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47. Rescue of glutaric aciduria type I in mice by liver-directed therapies.
- Author
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Barzi M, Johnson CG, Chen T, Rodriguiz RM, Hemmingsen M, Gonzalez TJ, Rosales A, Beasley J, Peck CK, Ma Y, Stiles AR, Wood TC, Maeso-Diaz R, Diehl AM, Young SP, Everitt JI, Wetsel WC, Lagor WR, Bissig-Choisat B, Asokan A, El-Gharbawy A, and Bissig KD
- Subjects
- Animals, Mice, Mice, Knockout, Liver metabolism, Glutaryl-CoA Dehydrogenase genetics, Glutaryl-CoA Dehydrogenase metabolism, Lysine metabolism
- Abstract
Glutaric aciduria type I (GA-1) is an inborn error of metabolism with a severe neurological phenotype caused by the deficiency of glutaryl-coenzyme A dehydrogenase (GCDH), the last enzyme of lysine catabolism. Current literature suggests that toxic catabolites in the brain are produced locally and do not cross the blood-brain barrier. In a series of experiments using knockout mice of the lysine catabolic pathway and liver cell transplantation, we uncovered that toxic GA-1 catabolites in the brain originated from the liver. Moreover, the characteristic brain and lethal phenotype of the GA-1 mouse model was rescued by two different liver-directed gene therapy approaches: Using an adeno-associated virus, we replaced the defective Gcdh gene or we prevented flux through the lysine degradation pathway by CRISPR deletion of the aminoadipate-semialdehyde synthase ( Aass ) gene. Our findings question the current pathophysiological understanding of GA-1 and reveal a targeted therapy for this devastating disorder.
- Published
- 2023
- Full Text
- View/download PDF
48. Deriving spatially explicit direct and indirect interaction networks from animal movement data.
- Author
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Yang A, Wilber MQ, Manlove KR, Miller RS, Boughton R, Beasley J, Northrup J, VerCauteren KC, Wittemyer G, and Pepin K
- Abstract
Quantifying spatiotemporally explicit interactions within animal populations facilitates the understanding of social structure and its relationship with ecological processes. Data from animal tracking technologies (Global Positioning Systems ["GPS"]) can circumvent longstanding challenges in the estimation of spatiotemporally explicit interactions, but the discrete nature and coarse temporal resolution of data mean that ephemeral interactions that occur between consecutive GPS locations go undetected. Here, we developed a method to quantify individual and spatial patterns of interaction using continuous-time movement models (CTMMs) fit to GPS tracking data. We first applied CTMMs to infer the full movement trajectories at an arbitrarily fine temporal scale before estimating interactions, thus allowing inference of interactions occurring between observed GPS locations. Our framework then infers indirect interactions-individuals occurring at the same location, but at different times-while allowing the identification of indirect interactions to vary with ecological context based on CTMM outputs. We assessed the performance of our new method using simulations and illustrated its implementation by deriving disease-relevant interaction networks for two behaviorally differentiated species, wild pigs ( Sus scrofa ) that can host African Swine Fever and mule deer ( Odocoileus hemionus ) that can host chronic wasting disease. Simulations showed that interactions derived from observed GPS data can be substantially underestimated when temporal resolution of movement data exceeds 30-min intervals. Empirical application suggested that underestimation occurred in both interaction rates and their spatial distributions. CTMM-Interaction method, which can introduce uncertainties, recovered majority of true interactions. Our method leverages advances in movement ecology to quantify fine-scale spatiotemporal interactions between individuals from lower temporal resolution GPS data. It can be leveraged to infer dynamic social networks, transmission potential in disease systems, consumer-resource interactions, information sharing, and beyond. The method also sets the stage for future predictive models linking observed spatiotemporal interaction patterns to environmental drivers., Competing Interests: All authors declare no conflict of interest., (© 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
- Published
- 2023
- Full Text
- View/download PDF
49. SNAPSHOT USA 2020: A second coordinated national camera trap survey of the United States during the COVID-19 pandemic.
- Author
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Kays R, Cove MV, Diaz J, Todd K, Bresnan C, Snider M, Lee TE Jr, Jasper JG, Douglas B, Crupi AP, Weiss KCB, Rowe H, Sprague T, Schipper J, Lepczyk CA, Fantle-Lepczyk JE, Davenport J, Zimova M, Farris Z, Williamson J, Fisher-Reid MC, Rezendes D, King SM, Chrysafis P, Jensen AJ, Jachowski DS, King KC, Herrera DJ, Moore S, van der Merwe M, Lombardi JV, Sergeyev M, Tewes ME, Horan RV 3rd, Rentz MS, Driver A, Brandt RSE, Nagy C, Alexander P, Maher SP, Darracq AK, Barr EG, Hess G, Webb SL, Proctor MD, Vanek JP, Lafferty DJR, Hubbard T, Jiménez JE, McCain C, Favreau J, Fogarty J, Hill J, Hammerich S, Gray M, Rega-Brodsky CC, Durbin C, Flaherty EA, Brooke J, Coster SS, Lathrop RG, Russell K, Bogan DA, Shamon H, Rooney B, Rockhill A, Lonsinger RC, O'Mara MT, Compton JA, Barthelmess EL, Andy KE, Belant JL, Petroelje T, Wehr NH, Beyer DE Jr, Scognamillo DG, Schalk C, Day K, Ellison CN, Ruthven C, Nunley B, Fritts S, Whittier CA, Neiswenter SA, Pelletier R, DeGregorio BA, Kuprewicz EK, Davis ML, Baruzzi C, Lashley MA, McDonald B, Mason D, Risch DR, Allen ML, Whipple LS, Sperry JH, Alexander E, Wolff PJ, Hagen RH, Mortelliti A, Bolinjcar A, Wilson AM, Van Norman S, Powell C, Coletto H, Schauss M, Bontrager H, Beasley J, Ellis-Felege SN, Wehr SR, Giery ST, Pekins CE, LaRose SH, Revord RS, Hansen CP, Hansen L, Millspaugh JJ, Zorn A, Gerber BD, Rezendes K, Adley J, Sevin J, Green AM, Şekercioğlu ÇH, Pendergast ME, Mullen K, Bird T, Edelman AJ, Romero A, O'Neill BJ, Schmitz N, Vandermus RA, Alston JM, Kuhn KM, Hasstedt SC, Lesmeister DB, Appel CL, Rota C, Stenglein JL, Anhalt-Depies C, Nelson CL, Long RA, Remine KR, Jordan MJ, Elbroch LM, Bergman D, Cendejas-Zarelli S, Sager-Fradkin K, Conner M, Morris G, Parsons E, Hernández-Yáñez H, and McShea WJ
- Subjects
- Animals, Animals, Wild, Birds, Humans, Mammals, Pandemics, United States, COVID-19 epidemiology
- Abstract
Managing wildlife populations in the face of global change requires regular data on the abundance and distribution of wild animals, but acquiring these over appropriate spatial scales in a sustainable way has proven challenging. Here we present the data from Snapshot USA 2020, a second annual national mammal survey of the USA. This project involved 152 scientists setting camera traps in a standardized protocol at 1485 locations across 103 arrays in 43 states for a total of 52,710 trap-nights of survey effort. Most (58) of these arrays were also sampled during the same months (September and October) in 2019, providing a direct comparison of animal populations in 2 years that includes data from both during and before the COVID-19 pandemic. All data were managed by the eMammal system, with all species identifications checked by at least two reviewers. In total, we recorded 117,415 detections of 78 species of wild mammals, 9236 detections of at least 43 species of birds, 15,851 detections of six domestic animals and 23,825 detections of humans or their vehicles. Spatial differences across arrays explained more variation in the relative abundance than temporal variation across years for all 38 species modeled, although there are examples of significant site-level differences among years for many species. Temporal results show how species allocate their time and can be used to study species interactions, including between humans and wildlife. These data provide a snapshot of the mammal community of the USA for 2020 and will be useful for exploring the drivers of spatial and temporal changes in relative abundance and distribution, and the impacts of species interactions on daily activity patterns. There are no copyright restrictions, and please cite this paper when using these data, or a subset of these data, for publication., (© 2022 The Authors. Ecology © 2022 The Ecological Society of America.)
- Published
- 2022
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50. Dietary Protein Sources, Mediating Biomarkers, and Incidence of Type 2 Diabetes: Findings From the Women's Health Initiative and the UK Biobank.
- Author
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Li J, Glenn AJ, Yang Q, Ding D, Zheng L, Bao W, Beasley J, LeBlanc E, Lo K, Manson JE, Philips L, Tinker L, and Liu S
- Subjects
- Animals, Biological Specimen Banks, Biomarkers, Diet, Female, Humans, Incidence, Plant Proteins, Prospective Studies, Risk Factors, United Kingdom epidemiology, Women's Health, Diabetes Mellitus, Type 2 epidemiology, Diabetes Mellitus, Type 2 etiology, Dietary Proteins
- Abstract
Objective: Whether and how dietary protein intake is linked to type 2 diabetes (T2D) remains unclear. The aim of this study was to investigate the associations of protein intake with development of T2D and the potential mediating roles of T2D biomarkers., Research Design and Methods: We included 108,681 postmenopausal women without T2D at baseline from the Women's Health Initiative (WHI) (primary cohort) and 34,616 adults without T2D from the U.K. Biobank (UKB) (replication cohort). Cox proportional hazard models were used for estimation of protein-T2D associations. Mediation analysis was performed to assess the mediating roles of biomarkers in case-control studies nested in the WHI., Results: In the WHI, 15,842 incident T2D cases were identified during a median follow-up of 15.8 years. Intake of animal protein was associated with increased T2D risk (hazard ratio in comparing the highest to the lowest quintile = 1.31 [95% CI 1.24-1.37]) and plant protein with decreased risk (0.82 [0.78-0.86]). Intakes of red meat, processed meat, poultry, and eggs were associated with increased T2D risk and whole grains with decreased risk. Findings from the UKB were similar. These findings were materially attenuated after additional adjustment for BMI. Substituting 5% energy from plant protein for animal protein was associated with 21% decreased T2D risk (0.79 [0.74-0.84]), which was mediated by levels of hs-CRP, interleukin-6, leptin, and SHBG., Conclusions: Findings from these two large prospective cohorts support the notion that substituting plant protein for animal protein may decrease T2D risk mainly by reducing obesity-related inflammation., (© 2022 by the American Diabetes Association.)
- Published
- 2022
- Full Text
- View/download PDF
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