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Global South Asian And Black Relationships, Liam O’Loughlin, Pallavi Rastogi Jan 2022

Global South Asian And Black Relationships, Liam O’Loughlin, Pallavi Rastogi

Faculty Publications

No abstract provided.

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Nekton Community Dynamics Within Active And Inactive Deltas In A Major River Estuary: Potential Implications For Altered Hydrology Regimes, Caleb B. Taylor, John Andrew Nyman, Megan K. La Peyre Jan 2022

Nekton Community Dynamics Within Active And Inactive Deltas In A Major River Estuary: Potential Implications For Altered Hydrology Regimes, Caleb B. Taylor, John Andrew Nyman, Megan K. La Peyre

Faculty Publications

High fisheries production within estuaries is associated with coastal upwelling, tidal mixing, and land-based runoff facing increasing impacts from climate and human activities. Active river deltas receive large riverine inflows compared to inactive river deltas, providing contrasting estuaries to compare impacts of river inflow on estuarine nekton. We quantified nekton assemblages and stable isotopes (δ13C, δ15N) of commercially important blue crab Callinectes sapidus Rathbun, 1896 within an active and inactive delta in coastal Louisiana to explore the impacts of differing riverine inflow. Crustaceans dominated estuarine assemblages, differing only by season and not delta type, with summer and fall supporting highest …

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Nitrogen Rate And Harvest Date Effects On Energy Cane Yield, Quality Parameters, Nutrient Uptake And Biomass Chemical Composition, Marilyn Sebial Dalen, Brenda S. Tubana, Samuel Kwakye, Kun Jun Han Jan 2022

Nitrogen Rate And Harvest Date Effects On Energy Cane Yield, Quality Parameters, Nutrient Uptake And Biomass Chemical Composition, Marilyn Sebial Dalen, Brenda S. Tubana, Samuel Kwakye, Kun Jun Han

Faculty Publications

Enhancing energy cane biomass production can increase feedstock supply for lignocellulosic-based ethanol production. This study was conducted at the Louisiana State University Agricultural Center (LSU AgCenter) Sugar Research Station in St. Gabriel, LA, from 2013 to 2015 to evaluate yield, fiber composition, and nutrient removal rate of energy cane harvested at different dates. The treatments included two energy cane cultivars (‘Ho 02-113’ and ‘Ho 72-114’) and four N rates (0, 56, 112, and 224 kg N ha–1), arranged in split plot in a randomized complete block design with four replications. Fifteen plants were collected once a month beginning 2 mo …

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An Open Hardware 3-D Printed Device For Measuring Tensile Properties Of Thermoplastic Filament Polymers At Cryogenic Temperatures, Yue Liu, Ju Dong, Terrence R. Tiersch, Qinglin Wu, William T. Monroe Jan 2022

An Open Hardware 3-D Printed Device For Measuring Tensile Properties Of Thermoplastic Filament Polymers At Cryogenic Temperatures, Yue Liu, Ju Dong, Terrence R. Tiersch, Qinglin Wu, William T. Monroe

Faculty Publications

With the emerging recognition of open scientific hardware, rapid prototyping technology such as three-dimensional (3-D) printing is becoming widely available for fields such as cryobiology, and cryopreservation, where material selection for instruments and hardware has traditionally been problematic due to extreme low temperatures. A better understanding of the mechanical properties of 3-D printing thermoplastics at cryogenic temperatures is essential to material selection, part design, and printing optimization. The goal of the present study was to explore the feasibility of development for a 3-D printed device (‘CryoTensileDevice’) to hold a test specimen in liquid nitrogen and be mounted in standard mechanical …

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Racial Discrimination And Hazardous Drinking Among Black Drinkers: The Role Of Social Anxiety In The Minority Stress Model, Julia D. Buckner, Nina I. Glover, Justin M. Shepherd, Michael J. Zvolensky Jan 2022

Racial Discrimination And Hazardous Drinking Among Black Drinkers: The Role Of Social Anxiety In The Minority Stress Model, Julia D. Buckner, Nina I. Glover, Justin M. Shepherd, Michael J. Zvolensky

Faculty Publications

Objective: Black Americans who consume alcohol experience worse alcohol-related outcomes. Thus, identifying psycho-sociocultural factors that play a role in hazardous drinking among Black individuals is vital to informing prevention and treatment efforts to reduce these disparities. Racial discrimination is related to hazardous drinking among Black adults, suggesting that some may drink (and continue to drink despite drinking-related problems) to alleviate negative affect (e.g., depression, anxiety) associated with discrimination. Yet, despite the social nature of both racial discrimination and drinking, no known research has examined the role of social anxiety in the relations among racial discrimination experiences and hazardous drinking. Method: …

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Monitoring Leaf Phenology In Moist Tropical Forests By Applying A Superpixel-Based Deep Learning Method To Time-Series Images Of Tree Canopies, Guangqin Song, Shengbiao Wu, Calvin K.F. Lee, Shawn P. Serbin, Brett T. Wolfe, Michael K. Ng, Kim S. Ely, Marc Bogonovich, Jing Wang, Ziyu Lin, Scott Saleska, Bruce W. Nelson, Alistair Rogers, Jin Wu Jan 2022

Monitoring Leaf Phenology In Moist Tropical Forests By Applying A Superpixel-Based Deep Learning Method To Time-Series Images Of Tree Canopies, Guangqin Song, Shengbiao Wu, Calvin K.F. Lee, Shawn P. Serbin, Brett T. Wolfe, Michael K. Ng, Kim S. Ely, Marc Bogonovich, Jing Wang, Ziyu Lin, Scott Saleska, Bruce W. Nelson, Alistair Rogers, Jin Wu

Faculty Publications

Tropical leaf phenology—particularly its variability at the tree-crown scale—dominates the seasonality of carbon and water fluxes. However, given enormous species diversity, accurate means of monitoring leaf phenology in tropical forests is still lacking. Time series of the Green Chromatic Coordinate (GCC) metric derived from tower-based red–greenblue (RGB) phenocams have been widely used to monitor leaf phenology in temperate forests, but its application in the tropics remains problematic. To improve monitoring of tropical phenology, we explored the use of a deep learning model (i.e. superpixel-based Residual Networks 50, SP-ResNet50) to automatically differentiate leaves from non-leaves in phenocam images and to derive …

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Going Virtual: Academic Conferences In The Age Of Covid-19, Leandro Rodriguez Medina, Wesley Shrum Jan 2022

Going Virtual: Academic Conferences In The Age Of Covid-19, Leandro Rodriguez Medina, Wesley Shrum

Faculty Publications

In the context of the 2020 world pandemic of COVID-19, many professional and scientific associations have had to change the way that they gather and reorganize their scholarly conferences. For many of them, conferences are a main source of income and important occasions for business meetings and managerial decisions. Yet, with trips and face-to-face encounters banned, the opportunity arrived for going virtual and developing human and technical capacities to provide online environments for virtual conferences. In this article, we analyze the case of an e-conference co-organized by two international organizations at two levels: (a) the decision-making process and (b) the …

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‘Mental Health And Self-Rated Health Among U.S. South Asians: The Role Of Religious Group Involvement’, Samuel Stroope, Blake Victor Kent, Ying Zhang, Donna Spiegelman, Namratha R. Kandula, Anna B. Schachter, Alka Kanaya, Alexandra E. Shields Jan 2022

‘Mental Health And Self-Rated Health Among U.S. South Asians: The Role Of Religious Group Involvement’, Samuel Stroope, Blake Victor Kent, Ying Zhang, Donna Spiegelman, Namratha R. Kandula, Anna B. Schachter, Alka Kanaya, Alexandra E. Shields

Faculty Publications

Objectives: Only one community-based study has assessed religious group involvement and health outcomes among South Asians in the U.S., with mixed results. Here, using a large, South Asian community-based sample, the effects of six religious group involvement predictors–religious tradition, attendance, group prayer, giving/receiving congregational emotional support, congregational neglect, and congregational criticism–were examined in relation to four health outcomes: self-rated health, positive mental health functioning, trait anxiety, and trait anger. Design: The study used a new religion/spirituality questionnaire in the Mediators of Atherosclerosis Among South Asians Living in America (MASALA), the largest study of mental and physical well-being among U.S. South …

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Deriving A Tree Growth Model From Any Existing Stand Growth Model, Quang V. Cao Jan 2022

Deriving A Tree Growth Model From Any Existing Stand Growth Model, Quang V. Cao

Faculty Publications

In this study, a new method was developed to derive a tree survival and diameter growth model from any existing stand-level model, without the need for individual-tree growth data. Predictions from the derived tree model are constrained to match the number of trees and the basal area per hectare as outputted by the stand model. The tree models derived from three different stand models were evaluated against a tree model, in both unadjusted and disaggregated forms. For the same stand-level model, the derived tree model outperformed its counterpart, the disaggregated tree model. Furthermore, except for one stand model with poor …

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Predicting Future Diameter Distributions Given Current Stand Attributes, Quang V. Cao Jan 2022

Predicting Future Diameter Distributions Given Current Stand Attributes, Quang V. Cao

Faculty Publications

This study discussed four methods to project a diameter distribution from age A1 to age A2. Method 1 recovers parameters of the distribution at age A2 from stand attributes at that age. Method 2 uses a stand-level model to grow the quadratic mean diameter, and then recovers the distribution parameters from that prediction. Method 3 grows the diameter distribution by assuming tree-level survival and diameter growth functions. Method 4 first converts the diameter distribution at age A1 into a list of individual trees before growing these trees to age A2. In a numerical example employing the Weibull distribution, methods 3 …

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Deriving Tree Growth Models From Stand Models Based On The Selfthinning Rule Of Chinese Fir Plantations, Xiongqing Zhang, Quang V. Cao, Yancheng Qu, Jianguo Zhang Jan 2022

Deriving Tree Growth Models From Stand Models Based On The Selfthinning Rule Of Chinese Fir Plantations, Xiongqing Zhang, Quang V. Cao, Yancheng Qu, Jianguo Zhang

Faculty Publications

Self-thinning due to density-dependent mortality usually occurs during the forest development. To improve predictions of such processes during forest successions under climate change, reliable stand-level models are needed. In this study, we developed an integrated system of tree-and stand-level models by deriving tree diameter and survival models from stand growth and survival models based on climate-sensitive self-thinning rule of Chinese fir plantations in subtropical China. The resulting integrated system, having a unified mathematical structure, should provide consistent estimates at both tree and stand levels. Predictions were reasonable at both stand and tree levels. Because stand-level values aggregated from the tree …

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Perceptions Of Purpose, Cohesion, And Military Leadership: A Path Analysis Of Potential Primary Prevention Targets To Mitigate Suicidal Ideation, Benjamin Trachik, Emma H. Moscardini, Michelle L. Ganulin, Jen L. Mcdonald, Ashlee B. Mckeon, Raymond P. Tucker, Walter J. Sowden, Walter J. Sowden Jan 2022

Perceptions Of Purpose, Cohesion, And Military Leadership: A Path Analysis Of Potential Primary Prevention Targets To Mitigate Suicidal Ideation, Benjamin Trachik, Emma H. Moscardini, Michelle L. Ganulin, Jen L. Mcdonald, Ashlee B. Mckeon, Raymond P. Tucker, Walter J. Sowden, Walter J. Sowden

Faculty Publications

Rates of suicide in the US Army continue to rise, and by some accounts exceed the general population. This increase has renewed efforts to identify protective factors that may inform novel suicide prevention strategies. Previous research has demonstrated that a sense of purpose in life and perceived cohesion with military peers are related to a reduction in the severity of suicidal ideation (SI). Additionally, research in military samples supports decreased SI in Soldiers who endorse that their leaders convey a sense of purpose and meaning in their shared mission. However, no work has investigated whether these leadership styles relate to …

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Indirect Effects Of Soldier Healthy Eating And Physical Activity On Suicidal Ideation Through Psychological Health Symptoms In Active-Duty Military, Nicolas Oakey-Frost, Benjamin Trachik, Michelle L. Ganulin, Mathew L. Lopresti, Michael N. Dretsch, Raymond P. Tucker Jan 2022

Indirect Effects Of Soldier Healthy Eating And Physical Activity On Suicidal Ideation Through Psychological Health Symptoms In Active-Duty Military, Nicolas Oakey-Frost, Benjamin Trachik, Michelle L. Ganulin, Mathew L. Lopresti, Michael N. Dretsch, Raymond P. Tucker

Faculty Publications

The suicide rate within the military continues to rise. New approaches for prevention are needed which capitalize on existing strengths, are scalable at multiple levels, and promote mental fortitude. Healthy eating (HE) and physical activity (PA) represent scalable practices and methods for promoting mental health and protective factors within the military. A cross-sectional sample of N = 1019 active-duty Soldiers completed self-report measures of HE, PA, major depressive disorder (MDD) symptoms, generalized anxiety disorder (GAD) symptoms, and suicidal ideation (SI). Moderated mediation analyses using bootstrapping techniques were used to determine if HE and PA interact to relate to lower SI …

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Review Of When The Mask Slips, Michael F. Russo Jan 2022

Review Of When The Mask Slips, Michael F. Russo

Faculty Publications

No abstract provided.

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Fostering Evidence-Grounded Dialogue In A Multi-Institutional Digital Library, Leah Duncan, Elizabeth Joan Kelly, Sophia Ziegler Jan 2022

Fostering Evidence-Grounded Dialogue In A Multi-Institutional Digital Library, Leah Duncan, Elizabeth Joan Kelly, Sophia Ziegler

Faculty Publications

This report presents the findings of a survey of Louisiana-based librarians, archivists, and museum professionals’ processes for digitization selection and digital collection outreach and assessment. Survey participants were administrators at cultural heritage institutions that contribute to the Louisiana Digital Library (LDL), a state-wide resource for sharing digital heritage content.

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African Americans' Perceptions Of Nutrition Interventions: A Scoping Review, Matthew Greene, Bailey Houghtaling, Claire Sadeghzadeh, Molly De Marco, De'jerra Bryant, Randa Morgan, Denise Holston Jan 2022

African Americans' Perceptions Of Nutrition Interventions: A Scoping Review, Matthew Greene, Bailey Houghtaling, Claire Sadeghzadeh, Molly De Marco, De'jerra Bryant, Randa Morgan, Denise Holston

Faculty Publications

Nutrition education and policy, systems, and environmental (PSE) change interventions may be able to address food insecurity and obesity, conditions which are disproportionately experienced by African Americans. Work that seeks to address these disparities and advance social justice should uplift and learn from participant voices, particularly from marginalized groups. This scoping review aimed to summarize the available literature describing African Americans' perceptions of and experiences participating in nutrition interventions. We conducted an electronic literature search with the assistance of a research librarian which encompassed 6 databases (MEDLINE, PyscINFO, Agricola, ERIC, SocINDEX, and ProQuest Dissertations and Theses) and identified 35 sources …

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Development Of A Memories Vocabulary (Memvoc) For Food Products Using Coffee As Model, Adan Cabal-Prieto, Gabriela Teodoro-Bernabé, Cecilia Coria-Rincón, Lucia Sánchez-Arellano, Lorena Guadalupe Ramón-Canul, Jesús Rodríguez-Miranda, Witoon Prinyawiwatkul, José Manuel Juárez-Barrientos, José Andrés Herrera-Corredor, Emmanuel De Jesús Ramírez-Rivera Jan 2022

Development Of A Memories Vocabulary (Memvoc) For Food Products Using Coffee As Model, Adan Cabal-Prieto, Gabriela Teodoro-Bernabé, Cecilia Coria-Rincón, Lucia Sánchez-Arellano, Lorena Guadalupe Ramón-Canul, Jesús Rodríguez-Miranda, Witoon Prinyawiwatkul, José Manuel Juárez-Barrientos, José Andrés Herrera-Corredor, Emmanuel De Jesús Ramírez-Rivera

Faculty Publications

Multiple references in sensory science indicate that foods evoke memories during consumption, however, research regarding those memories is still limited. The objective of this study was to develop a vocabulary and implement it in a memories vocabulary related to food as a complement for the evaluation of sensory attributes and emotions, using coffee as a model. The memories vocabulary was generated with a series of successive studies that involved assigning positive and negative memories to different food groups and applying mathematical algorithms (WordCountAna and Factorial Approach) and contrasting memories with the scientific literature. Subsequently, the vocabulary was used to determine …

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Sensory Drivers Of Consumer Acceptance, Purchase Intent And Emotions Toward Brewed Black Coffee, Ammaraporn Pinsuwan, Suntaree Suwonsichon, Penkwan Chompreeda, Witoon Prinyawiwatkul Jan 2022

Sensory Drivers Of Consumer Acceptance, Purchase Intent And Emotions Toward Brewed Black Coffee, Ammaraporn Pinsuwan, Suntaree Suwonsichon, Penkwan Chompreeda, Witoon Prinyawiwatkul

Faculty Publications

The link between coffee aroma/flavor and elicited emotions remains underexplored. This research identified key sensory characteristics of brewed black coffee that affected acceptance, purchase intent and emotions for Thai consumers. Eight Arabica coffee samples were evaluated by eight trained descriptive panelists for intensities of 26 sensory attributes and by 100 brewed black coffee users for acceptance, purchase intent and emotions. Results showed that the samples exhibited a wide range of sensory characteristics, and large differences were mainly described by the attributes coffee identity (coffee ID), roasted, bitter taste, balance/blended and fullness. Differences also existed among the samples for overall liking, …

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Habitat Segregation Patterns Of Container Breeding Mosquitos: The Role Of Urban Heat Islands, Vegetation Cover, And Income Disparity In Cemeteries Of New Orleans, Rebeca De Jesús Crespo, Rachel Elba Rogers Jan 2022

Habitat Segregation Patterns Of Container Breeding Mosquitos: The Role Of Urban Heat Islands, Vegetation Cover, And Income Disparity In Cemeteries Of New Orleans, Rebeca De Jesús Crespo, Rachel Elba Rogers

Faculty Publications

Aedes aegypti and Aedes albopictus are important pathogen-carrying vectors that broadly exhibit similar habitat suitability, but that differ at fine spatial scales in terms of competitive advantage and tolerance to urban driven environmental parameters. This study evaluated how spatial and temporal patterns drive the assemblages of these competing species in cemeteries of New Orleans, LA, applying indicators of climatic variability, vegetation, and heat that may drive habitat selection at multiple scales. We found that Ae. aegypti was well predicted by urban heat islands (UHI) at the cemetery scale and by canopy cover directly above the cemetery vase. As predicted, UHI …

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New Bounds For State Transition Matrices, Frederic Mazenc, Michael Malisoff Jan 2022

New Bounds For State Transition Matrices, Frederic Mazenc, Michael Malisoff

Faculty Publications

We address the problem of constructing matrix-valued interval observers for estimating state transition matrices for time-varying systems. We provide less conservative estimators than those in recent literature. We cover continuous-and discrete-time linear systems, under Metzler or nonnegativity conditions on the coefficient matrices. We show how to satisfy our Metzler conditions after simple changes of coordinates. We illustrate our method using a feedback stabilized underwater marine robotic dynamics with unknown control gains.

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New Versions Of Halanay's Inequality With Multiple Gain Terms, Frederic Mazenc, Michael Malisoff Jan 2022

New Versions Of Halanay's Inequality With Multiple Gain Terms, Frederic Mazenc, Michael Malisoff

Faculty Publications

Halanay's inequality in its standard form is a widely used tool for the analysis of systems with delays and uncertainties, but the assumptions needed to use it are sometimes too restrictive to cover applications of interest. This letter provides new generalizations of Halanay's inequality where, instead of the usual supremum in the gain term in standard versions of Halanay's inequality, we use a weighted sum of suprema over different intervals. This allows us to derive sufficient conditions for asymptotic and input-to-state stability. We apply our results to linear systems with switched delays and other examples that illustrate how our results …

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Almost Finite-Time Observers For A Family Of Nonlinear Continuous-Time Systems, Frederic Mazenc, Michael Malisoff Jan 2022

Almost Finite-Time Observers For A Family Of Nonlinear Continuous-Time Systems, Frederic Mazenc, Michael Malisoff

Faculty Publications

We provide a new class of observers for a class of nonlinear systems which are not required to be affine in the unmeasured states. The observers ensure exponential convergence of the observation errors to zero, under linear output measurements. The rate of exponential convergence converges to infinity, as the growth rate of the nonlinear state-dependent part of the dynamics converges to zero, so we call the observers almost finite-time. Under global Lipschitz conditions on the state-dependent part of the dynamics, our global result ensures convergence of the observers, for all initial states. For cases where the nonlinearity is of order …

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New Finite-Time And Fast Converging Observers With A Single Delay, Frédéric Mazenc, Michael Malisoff Jan 2022

New Finite-Time And Fast Converging Observers With A Single Delay, Frédéric Mazenc, Michael Malisoff

Faculty Publications

We provide new reduced order observer designs for a key class of nonlinear dynamics. When continuous output measurements are available, we prove that our observers converge in a fixed finite time in the absence of perturbations, and we prove a robustness result under uncertainties in the output measurements and in the dynamics, which bounds the observation error in terms of bounds on the uncertainties. The observers contain a dynamic extension with only one pointwise delay, and they use the observability Gramian to eliminate an invertibility condition that was present in earlier finite time observer designs. We also provide analogs for …

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Finite-Time Observers For Parameters And State Variables Of Nonlinear Systems, Frédéric Mazenc, Michael Malisoff Jan 2022

Finite-Time Observers For Parameters And State Variables Of Nonlinear Systems, Frédéric Mazenc, Michael Malisoff

Faculty Publications

We provide a new class of finite-time observers for continuous-time nonlinear systems that are affine in the unmeasured state variable and that also contain unknown constant parameters. Our method provides exact values of the state variables and of the constant parameters, in a fixed finite time that is independent of the initial values. We also provide analogs where there is a known delay in the measurements, and for discrete-time systems. Our approach does not rely on an adaptive controller, and is suitable for computing exact values of constant weights in artificial neural network representations of additive uncertainties in the dynamics. …

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On A Capacitary Strong Type Inequality And Related Capacitary Estimates, Keng Hao Ooi, Nguyen Cong Phuc Jan 2022

On A Capacitary Strong Type Inequality And Related Capacitary Estimates, Keng Hao Ooi, Nguyen Cong Phuc

Faculty Publications

We establish a Maz'ya type capacitary inequality which resolves a special case of a conjecture by David R. Adams. As a consequence, we obtain several equivalent norms for Choquet integrals associated to Bessel or Riesz capacities. This enables us to obtain bounds for the Hardy-Littlewood maximal function in a sublinear setting.

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2-Modular Matrices, James Oxley, Zach Walsh Jan 2022

2-Modular Matrices, James Oxley, Zach Walsh

Faculty Publications

An integer matrix A is Δ -modular if the determinant of each rank(A) × rank(A) submatrix has absolute value at most Δ. The class of 1-modular, or unimodular, matrices is of fundamental significance in both integer programming theory and matroid theory. A 1957 result of Heller shows that the maximum number of nonzero, pairwise non-parallel columns of a rank-r unimodular matrix is (r+1/2). We prove that, for each sufficiently large integer r, the maximum number of nonzero, pairwise non-parallel columns of a rank-r 2-modular matrix is (r+2/2) - 2.

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Small Cocircuits In Minimally Vertically 4-Connected Matroids, James Oxley, Zach Walsh Jan 2022

Small Cocircuits In Minimally Vertically 4-Connected Matroids, James Oxley, Zach Walsh

Faculty Publications

Halin proved that every minimally k-connected graph has a vertex of degree k. More generally, does every minimally vertically k-connected matroid have a k-element cocircuit? Results of Murty and Wong give an affirmative answer when k \leq 3. We show that every minimally vertically 4-connected matroid with at least six elements has a 4-element cocircuit, or a 5-element cocircuit that contains a triangle, with the exception of a specific nonbinary 9-element matroid. Consequently, every minimally vertically 4-connected binary matroid with at least six elements has a 4-element cocircuit.

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The Grandma Network In Preparation For The Fourth Gravitational-Wave Observing Run, S. Agayeva, V. Aivazyan, S. Alishov, M. Almualla, C. Andrade, Sarah Antier, J. M. Bai, A. Baransky, S. Basa, P. Bendjoya, Z. Benkhaldoun, S. Beradze, D. Berezin, U. Bhardwaj, M. Blazek, O. Burkhonov, E. Burns, S. Caudill, N. Christensen, F. Colas, A. Coleiro, W. Corradi, M. W. Coughlin, T. Culino, D. Darson, D. Datashvili, G. De Wasseige, T. Dietrich, F. Dolon, D. Dornic, J. Dubouil, J. G. Ducoin, P. A. Duverne Jan 2022

The Grandma Network In Preparation For The Fourth Gravitational-Wave Observing Run, S. Agayeva, V. Aivazyan, S. Alishov, M. Almualla, C. Andrade, Sarah Antier, J. M. Bai, A. Baransky, S. Basa, P. Bendjoya, Z. Benkhaldoun, S. Beradze, D. Berezin, U. Bhardwaj, M. Blazek, O. Burkhonov, E. Burns, S. Caudill, N. Christensen, F. Colas, A. Coleiro, W. Corradi, M. W. Coughlin, T. Culino, D. Darson, D. Datashvili, G. De Wasseige, T. Dietrich, F. Dolon, D. Dornic, J. Dubouil, J. G. Ducoin, P. A. Duverne

Faculty Publications

GRANDMA is a world-wide collaboration with the primary scientific goal of studying gravitational-wave sources, discovering their electromagnetic counterparts and characterizing their emission. GRANDMA involves astronomers, astrophysicists, gravitational-wave physicists, and theorists. GRANDMA is now a truly global network of telescopes, with (so far) 30 telescopes in both hemispheres. It incorporates a citizen science programme (Kilonova-Catcher) which constitutes an opportunity to spread the interest in time-domain astronomy. The telescope network is an heterogeneous set of already-existing observing facilities that operate coordinated as a single observatory. Within the network there are wide-field imagers that can observe large areas of the sky to search …

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Phylogenetics Of Archerfishes (Toxotidae) And Evolution Of The Toxotid Shooting Apparatus, M. G. Girard, M. P. Davis, Tan H.H., D. J. Wedd, P. Chakrabarty, W. B. Ludt, A. P. Summers, W. L. Smith Jan 2022

Phylogenetics Of Archerfishes (Toxotidae) And Evolution Of The Toxotid Shooting Apparatus, M. G. Girard, M. P. Davis, Tan H.H., D. J. Wedd, P. Chakrabarty, W. B. Ludt, A. P. Summers, W. L. Smith

Faculty Publications

Synopsis: Archerfishes (Toxotidae) are variously found in the fresh- and brackish-water environments of Asia Pacific and are well known for their ability to shoot water at terrestrial prey. These shots of water are intended to strike their prey and cause it to fall into the water for capture and consumption. While this behavior is well known, there are competing hypotheses (blowpipe vs. pressure tank hypothesis) of how archerfishes shoot and which oral structures are involved. Current understanding of archerfish shooting structures is largely based on two species, Toxotes chatareus and T. jaculatrix. We do not know if all archerfishes possess …

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Strengthened Chain Theorems For Different Versions Of 4-Connectivity, Guoli Ding, Chengfu Qin Jan 2022

Strengthened Chain Theorems For Different Versions Of 4-Connectivity, Guoli Ding, Chengfu Qin

Faculty Publications

The chain theorem of Tutte states that every 3-connected graph can be constructed from a wheel Wn by repeatedly adding edges and splitting vertices. It is not difficult to prove the following strengthening of this theorem: every non-wheel 3-connected graph can be constructed from W4 by repeatedly adding edges and splitting vertices. In this paper, we similarly strengthen several chain theorems for various versions of 4-connectivity.

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