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A Balancing Domain Decomposition By Constraints Preconditioner For A C0 Interior Penalty Method, Susanne C. Brenner, Eun Hee Park, Li Yeng Sung, Kening Wang Jan 2020

A Balancing Domain Decomposition By Constraints Preconditioner For A C0 Interior Penalty Method, Susanne C. Brenner, Eun Hee Park, Li Yeng Sung, Kening Wang

Faculty Publications

Consider the following weak formulation of a fourth order problem on a bounded polygonal domain Ω in R : 2


Finite Element Methods For One Dimensional Elliptic Distributed Optimal Control Problems With Pointwise Constraints On The Derivative Of The State, S. C. Brenner, L. Y. Sung, W. Wollner Jan 2020

Finite Element Methods For One Dimensional Elliptic Distributed Optimal Control Problems With Pointwise Constraints On The Derivative Of The State, S. C. Brenner, L. Y. Sung, W. Wollner

Faculty Publications

We investigate C finite element methods for one dimensional elliptic distributed optimal control problems with pointwise constraints on the derivative of the state formulated as fourth order variational inequalities for the state variable. For the problem with Dirichlet boundary conditions, we use an existing H52-ϵ regularity result for the optimal state to derive O(h12-ϵ) convergence for the approximation of the optimal state in the H norm. For the problem with mixed Dirichlet and Neumann boundary conditions, we show that the optimal state belongs to H under appropriate assumptions on the data and obtain O(h) convergence for the approximation of the …


Additive Schwarz Preconditioners For A Localized Orthogonal Decomposition Method, Susanne C. Brenner, José C. Garay, Li Yeng Sung Jan 2020

Additive Schwarz Preconditioners For A Localized Orthogonal Decomposition Method, Susanne C. Brenner, José C. Garay, Li Yeng Sung

Faculty Publications

We investigate a variant of the localized orthogonal decomposition method (Henning and Peterseim, [Multiscale Model. Simul., 11 (2013), pp. 1149 1175] and Malqvist and Peterseim, [Math. Comp., 83 (2014), pp. 2583 2603]) for elliptic problems with rough coefficients. The construction of the basis of the multiscale finite element space is based on domain decomposition techniques, which is motivated by the recent work of Kornhuber, Peterseim, and Yserentant [Math. Comp., 87 (2018), pp. 2765 2774]. We also design and analyze additive Schwarz domain decomposition preconditioners for the resulting discrete problems.


P 1 Finite Element Methods For An Elliptic Optimal Control Problem With Pointwise State Constraints, Susanne C. Brenner, Li Yeng Sung, Joscha Gedicke Jan 2020

P 1 Finite Element Methods For An Elliptic Optimal Control Problem With Pointwise State Constraints, Susanne C. Brenner, Li Yeng Sung, Joscha Gedicke

Faculty Publications

We present theoretical and numerical results for two P finite element methods for an elliptic distributed optimal control problem on general polygonal/polyhedral domains with pointwise state constraints. 1


Extremal Khovanov Homology Of Turaev Genus One Links, Oliver T. Dasbach, Adam M. Lowrance Jan 2020

Extremal Khovanov Homology Of Turaev Genus One Links, Oliver T. Dasbach, Adam M. Lowrance

Faculty Publications

The Turaev genus of a link can be thought of as a way of measuring how nonalternating a link is. A link is Turaev genus zero if and only if it is alternating, and in this viewpoint, links with large Turaev genus are very nonalternating. In this paper, we study Turaev genus one links, a class of links which includes almost alternating links. We prove that the Khovanov homology of a Turaev genus one link is isomorphic to Z in at least one of its extremal quantum gradings. As an application, we compute or nearly compute the maximal Thurston Bennequin …


Stabilization For A Chain Of Saturating Integrators Arising In The Visual Landing Of Aircraft With Sampling, Laurent Burlion, Michael Malisoff, Frédéric Mazenc Jan 2020

Stabilization For A Chain Of Saturating Integrators Arising In The Visual Landing Of Aircraft With Sampling, Laurent Burlion, Michael Malisoff, Frédéric Mazenc

Faculty Publications

We provide a new output feedback control design for a chain of saturating integrators with imprecise output measurements where the outputs can also contain delays and sampling. Using a backstepping approach that leads to pointwise delays in the control and a dynamic extension, we prove input-to-state stability using a new dynamic extension approach. We utilize our main result to solve a problem in the visual landing of aircraft in the glide phase in the presence of delayed and sampled image processing.


Delayed Newton-Based Multivariable Extremum Seeking With Sequential Predictors, Michael Malisoff, Miroslav Krstic Jan 2020

Delayed Newton-Based Multivariable Extremum Seeking With Sequential Predictors, Michael Malisoff, Miroslav Krstic

Faculty Publications

We provide a new method for Newton-based multivariable extremum seeking which allows different delays in each of the input channels. We allow arbitrarily long input delays. Our sequential predictor delay compensation method eliminates the need for the distributed terms that were required in earlier methods. We illustrate our method in a source seeking example.


A New Spectroscopic Analysis Of The Massive O + O Type Binary Hd54662ab, R. H. Barba, C. Sabin-Sanjulian, J. I. Arias, R. C. Gamen, N. I. Morrell, G. Ferrero, J. Maiz Apellaniz, C. Putkuri, S. Simon Diaz, T. S. Boyajian, A. W. Fullerton, M. V. Mcswain Jan 2020

A New Spectroscopic Analysis Of The Massive O + O Type Binary Hd54662ab, R. H. Barba, C. Sabin-Sanjulian, J. I. Arias, R. C. Gamen, N. I. Morrell, G. Ferrero, J. Maiz Apellaniz, C. Putkuri, S. Simon Diaz, T. S. Boyajian, A. W. Fullerton, M. V. Mcswain

Faculty Publications

HD54662AB is one of the three O + OB binaries known so far with orbital period longer than 1000 d, offering the opportunity to test scenarios of massive star formation and models of single stellar evolution. Here, we present a detailed study of this system based on new high-resolution spectra and data. A disentangling method is used to recover the individual spectra of the primary and secondary components, which are classified as O6.5 V(n)z and O7.5 Vz, respectively. Combining radial velocity measurements and astrometric data, a new absolute orbit with a period of 2113 ± 9 d and an eccentricity …


Potential Predictability Of Net Primary Production In The Ocean, K.M. Krumhardt, N.S. Lovenduski, M.C. Long, J.Y. Luo, K. Lindsay, S. Yeager, C. Harrison Jan 2020

Potential Predictability Of Net Primary Production In The Ocean, K.M. Krumhardt, N.S. Lovenduski, M.C. Long, J.Y. Luo, K. Lindsay, S. Yeager, C. Harrison

Faculty Publications

No abstract provided.


Marine Wild-Capture Fisheries After Nuclear War, K.J.N. Scherrer, C.S. Harrison, R.F. Heneghan, E. Galbraith, C.G. Bardeen, J. Coupe, J. Jägermeyr, N.S. Lovenduski, A. Luna, A. Robock, J. Stevens, S. Stevenson, O.B. Toon, L. Xia Jan 2020

Marine Wild-Capture Fisheries After Nuclear War, K.J.N. Scherrer, C.S. Harrison, R.F. Heneghan, E. Galbraith, C.G. Bardeen, J. Coupe, J. Jägermeyr, N.S. Lovenduski, A. Luna, A. Robock, J. Stevens, S. Stevenson, O.B. Toon, L. Xia

Faculty Publications

No abstract provided.


Eddy-Modified Iron, Light, And Phytoplankton Cell Division Rates In The Simulated Southern Ocean, T. Rohr, C. Harrison, M.C. Long, P. Gaube, S.C. Doney Jan 2020

Eddy-Modified Iron, Light, And Phytoplankton Cell Division Rates In The Simulated Southern Ocean, T. Rohr, C. Harrison, M.C. Long, P. Gaube, S.C. Doney

Faculty Publications

No abstract provided.


New Ab Initio Approach To Nuclear Reactions Based On The Symmetry-Adapted No-Core Shell Model, Alexis Mercenne, Kristina D. Launey, Jutta E. Escher, Tomas Dytrych, Jerry P. Draayer Jan 2020

New Ab Initio Approach To Nuclear Reactions Based On The Symmetry-Adapted No-Core Shell Model, Alexis Mercenne, Kristina D. Launey, Jutta E. Escher, Tomas Dytrych, Jerry P. Draayer

Faculty Publications

We present the current development of a new ab initio approach for nuclear reactions that takes advantage of SU(3) symmetry and its relevant dynamics combined with the resonating group method. In this model, the structure of the clusters is based on the ab initio symmetry-adapted no-core shell model, which enables the description of spatially enhanced nuclear configurations. We will present the formalism that involves the expression of the norm kernels in the SU(3) symmetry-adapted basis, in addition to first results for the p-(formula presented), p-(formula presented)O and p-(formula presented)Ne scattering reactions.


The Influence Of Language Background And Second Language Phonetics Training On The Perception Of Lexical Stress In A Second Language, Todd A. Gibson, Carolina Bernales Jan 2020

The Influence Of Language Background And Second Language Phonetics Training On The Perception Of Lexical Stress In A Second Language, Todd A. Gibson, Carolina Bernales

Faculty Publications

Language background and second language (L2) training both have been found to contribute to L2 lexical stress perception. To explore their relative contributions, a lexical stress perception task was administered to a total of 129 university students of different language backgrounds. A group of 62 monolingual English-speaking students in the U.S.A. and 67 English-as-a-foreign-language students in Chile were asked to identify lexical stress in trochees and iambs. Chileans with previous phonetics training performed better than Chileans without the training and performed as well as their U.S. peers. U.S. participants and those Chileans without previous phonetics training performed better with trochees …


Vowel Acoustic Characteristics Of Southern American English Variation In Louisiana, Hyunju Chung Jan 2020

Vowel Acoustic Characteristics Of Southern American English Variation In Louisiana, Hyunju Chung

Faculty Publications

This study examined acoustic characteristics of vowels produced by speakers from Louisiana, one of the states in the Southern English dialect region. First, how Louisiana vowels differ from or are similar to the reported patterns of Southern dialect were examined. Then, within-dialect differences across regions in Louisiana were examined. Thirty-four female adult monolingual speakers of American English from Louisiana, ranging in age from 18 to 23, produced English monosyllabic words containing 11 vowels/i, É, e, É, æ, E, u, ÊŠ, o, É, É/. The first two formant frequencies at the midpoint of the vowel nucleus, direction, and amount of formant …


Rates And Predictors Of Co-Occurring Autism Spectrum Disorder In Boys With Fragile X Syndrome, Eileen Haebig, Audra Sterling, Andrea Barton-Hulsey, Laura Friedman Jan 2020

Rates And Predictors Of Co-Occurring Autism Spectrum Disorder In Boys With Fragile X Syndrome, Eileen Haebig, Audra Sterling, Andrea Barton-Hulsey, Laura Friedman

Faculty Publications

Background and aims: Males with fragile X syndrome display many behavioral features of autism spectrum disorder. Despite this overlap, our understanding of autism spectrum disorder symptoms and severity in fragile X syndrome is limited due to variation in assessment methods in the literature. Furthermore, the relationship between autism spectrum disorder symptoms and child characteristics, like age, language, and cognitive abilities, are not well understood in individuals with fragile X syndrome. Therefore, the first research aim was to compare the rates of autism spectrum disorder classifications from three commonly reported autism spectrum disorder assessments in the literature. Our second research aim …


Expressive Language Abilities Of Boys With Idiopathic Autism Spectrum Disorder And Boys With Fragile X Syndrome + Autism Spectrum Disorder: Cross-Context Comparisons, Elizabeth Hilvert, Audra Sterling, Eileen Haebig, Laura Friedman Jan 2020

Expressive Language Abilities Of Boys With Idiopathic Autism Spectrum Disorder And Boys With Fragile X Syndrome + Autism Spectrum Disorder: Cross-Context Comparisons, Elizabeth Hilvert, Audra Sterling, Eileen Haebig, Laura Friedman

Faculty Publications

Background and aims: Understanding the unique expressive language profiles of children with phenotypically similar, but distinct neurodevelopmental disorders, such as idiopathic autism spectrum disorder and fragile X syndrome with a co-diagnosis of autism spectrum disorder (fragile X syndrome + autism spectrum disorder), has both clinical and theoretical implications. However, comparative studies of these two clinical groups have been limited, and results have been inconsistent, partially as a result of different assessment methods being utilized. Thus, the current study compared the expressive language profiles of boys with idiopathic autism spectrum disorder and boys with fragile X syndrome + autism spectrum disorder …


Determination Of Clinical Parameters Sensitive To Functional Voice Disorders Applying Boosted Decision Stumps, Patrick Schlegel, Andreas M. Kist, Marion Semmler, Michael Dollinger, Melda Kunduk, Stephan Durr, Anne Schutzenberger Jan 2020

Determination Of Clinical Parameters Sensitive To Functional Voice Disorders Applying Boosted Decision Stumps, Patrick Schlegel, Andreas M. Kist, Marion Semmler, Michael Dollinger, Melda Kunduk, Stephan Durr, Anne Schutzenberger

Faculty Publications

Background: Various voice assessment tools, such as questionnaires and aerodynamic voice characteristics, can be used to assess vocal function of individuals. However, not much is known about the best combinations of these parameters in identification of functional dysphonia in clinical settings. Methods: This study investigated six scores from clinically commonly used questionnaires and seven acoustic parameters. 514 females and 277 males were analyzed. The subjects were divided into three groups: one healthy group (N01) (49 females, 50 males) and two disordered groups with perceptually hoarse (FD23) (220 females, 96 males) and perceptually not hoarse (FD01) (245 females, 131 males) sounding …


Introduction To The Special Issue On English In The Southern United States: Social Factors And Language Variation, Irina Shport, Wendy Herd Jan 2020

Introduction To The Special Issue On English In The Southern United States: Social Factors And Language Variation, Irina Shport, Wendy Herd

Faculty Publications

The Southern United States have long been known for language diversity, yet linguistic research in this region has often focused on broad descriptions of characteristics of Southern American English as compared to other regional dialects of American English. Linguistic subregions in the South, however, are distinctly different from each other, and additional social variation also occurs within those subregions. Thus, the different English varieties spoken in the South cannot be collapsed under a single umbrella. Analyzing varieties of English in the Southern United States calls for a narrower approach, which will more accurately represent diverse Southern communities, their languages of …


Thermal Stability And Flame Resistance Of The Coextruded Wood-Plastic Composites Containing Talc-Filled Plastic Shells, Runzhou Huang, Xian Zhang, Zhilin Chen, Minli Wan, Qinglin Wu Jan 2020

Thermal Stability And Flame Resistance Of The Coextruded Wood-Plastic Composites Containing Talc-Filled Plastic Shells, Runzhou Huang, Xian Zhang, Zhilin Chen, Minli Wan, Qinglin Wu

Faculty Publications

Talc is a popular filler for the fabrication of plastic composites. The presence of talc helps improve mechanical, thermal, and flame resistance properties of the composite. In this work, we report the influence of a talc-filled plastic shell layer on thermal stability and fire flammability of the core-shell structured wood high-density polyethylene (HDPE) composites manufactured through coextrusion. The result showed that morphological analysis of the char layer after combustion confirmed the formation of a continuous surface char layer with talc addition in the composites, helping block fire penetration and enhance overall fire resistance of the composites. The shell thickness averaged …


Investigating The Potential Use Of Sentinel-1 Data For Monitoring Wetland Water Level Changes In China's Momoge National Nature Reserve, Yueqing Chen, Sijia Qiao, Guangxin Zhang, Y. Jun Xu, Liwen Chen, Lili Wu Jan 2020

Investigating The Potential Use Of Sentinel-1 Data For Monitoring Wetland Water Level Changes In China's Momoge National Nature Reserve, Yueqing Chen, Sijia Qiao, Guangxin Zhang, Y. Jun Xu, Liwen Chen, Lili Wu

Faculty Publications

Background. Interferometric Synthetic Aperture Radar (InSAR) has become a promising technique for monitoring wetland water levels. However, its capability in monitoring wetland water level changes with Sentine-1 data has not yet been thoroughly investigated. Methods. In this study, we produced a multitemporal Sentinel-1 C-band VV-polarized SAR backscatter images and generated a total of 28 interferometric coherence maps for marsh wetlands of China's Momoge National Nature Reserve to investigate the interferometric coherence level of Sentinel-1 C-VV data as a function of perpendicular and temporal baseline, water depth, and SAR backscattering intensity. We also selected six interferogram pairs acquired within 24 days …


Small Ceramide Tames Big P53 Mutant Beast, Ronald A. Hill, Zhijun Liu, Yong Yu Liu Jan 2020

Small Ceramide Tames Big P53 Mutant Beast, Ronald A. Hill, Zhijun Liu, Yong Yu Liu

Faculty Publications

No abstract provided.


Running Local: Gender Stereotyping And Female Candidates In Local Elections, Nichole M. Bauer Jan 2020

Running Local: Gender Stereotyping And Female Candidates In Local Elections, Nichole M. Bauer

Faculty Publications

An implicit assumption underlying the gender stereotyping literature is that female candidates have an advantage in local elections. Two factors motivate this assumption. First, some local issues, such as the provision of social services, fit into the stereotypic strengths of female politicians. Second, as the level of office increases, so too does the perceived masculinity of the office. Research on local policymaking, however, indicates that the tasks associated with local political offices, such as economic competition with other cites, require masculine rather than feminine qualities. I integrate research on local policymaking with the gender stereotyping literature to clarify the role …


Side Information Dependence As A Regularizer For Analyzing Human Brain Conditions Across Cognitive Experiments, Shuo Zhou, Wenwen Li, Christopher R. Cox, Haiping Lu Jan 2020

Side Information Dependence As A Regularizer For Analyzing Human Brain Conditions Across Cognitive Experiments, Shuo Zhou, Wenwen Li, Christopher R. Cox, Haiping Lu

Faculty Publications

The increasing of public neuroimaging datasets opens a door to analyzing homogeneous human brain conditions across datasets by transfer learning (TL). However, neuroimaging data are high-dimensional, noisy, and with small sample sizes. It is challenging to learn a robust model for data across different cognitive experiments and subjects. A recent TL approach minimizes domain dependence to learn common cross-domain features, via the Hilbert-Schmidt Independence Criterion (HSIC). Inspired by this approach and the multi-source TL theory, we propose a Side Information Dependence Regularization (SIDeR) learning framework for TL in brain condition decoding. Specifically, SIDeR simultaneously minimizes the empirical risk and the …


Are Individual Differences In Auditory Processing Related To Auditory Distraction By Irrelevant Sound? A Replication Study, Emily M. Elliott, John E. Marsh, Jenna Zeringue, Corey I. Mcgill Jan 2020

Are Individual Differences In Auditory Processing Related To Auditory Distraction By Irrelevant Sound? A Replication Study, Emily M. Elliott, John E. Marsh, Jenna Zeringue, Corey I. Mcgill

Faculty Publications

Irrelevant sounds can be very distracting, especially when trying to recall information according to its serial order. The irrelevant sound effect (ISE) has been studied in the literature for more than 40 years, yet many questions remain. One goal that has received little attention involves the discernment of a predictive factor, or individual difference characteristic, that would help to determine the size of the ISE. The current experiments were designed to replicate and extend prior work by Macken, Phelps, and Jones (Psychonomic Bulletin & Review, 16, 139–144, 2009), who demonstrated a significant predictive relationship between the size of the ISE …


Emerging Infectious Disease, The Household Built Environment Characteristics, And Urban Planning: Evidence On Avian Influenza In Vietnam, James H. Spencer, Melissa L. Finucane, Jefferson M. Fox, Sumeet Saksena, Nargis Sultana Jan 2020

Emerging Infectious Disease, The Household Built Environment Characteristics, And Urban Planning: Evidence On Avian Influenza In Vietnam, James H. Spencer, Melissa L. Finucane, Jefferson M. Fox, Sumeet Saksena, Nargis Sultana

Faculty Publications

Recent concerns with pandemic outbreaks of human disease and their origins in animal populations have ignited concerns regarding connections between Emerging Infectious Diseases (EID) and development. As disasters, health, and infectious disease become part of planning concern (Matthew & McDonald, 2007), greater focus on household infrastructure and EID disease outbreaks among poultry is warranted. Following Spencer (2013), this study examines the relationship between the mix of household-scale water supplies, sanitation systems, and construction materials, and Highly Pathogenic Avian Influenza (HPAI) among poultry in a developing country: Vietnam. Findings of our multivariate logistic regressions suggest that a non-linear, Kuznets-shaped urban transition …


The Love Of Aerial Practice: Art, Embodiment, Phronesis, Maria Kosma, Nick Erickson Jan 2020

The Love Of Aerial Practice: Art, Embodiment, Phronesis, Maria Kosma, Nick Erickson

Faculty Publications

Background of study: Given the importance of movement and low exercise adherence among young adults, it is imperative to understand reasons for the love of movement. Objective: The purpose of this phronetic, qualitative study was to examine if the values of aerial practice encompassed elements of embodiment, techne (art), and phronesis (practical wisdom). Method: Participants were 13 undergraduate college students in an aerial practice class. Individual-based interview topics included exercise behavior and the values and meaning of aerial practice. Results: All participants were active regardless of aerial practice classification (e.g., beginners vs advanced). Beyond aerial practice, other exercises included dancing, …


Celebrating The Twentieth Anniversary Of The Voice And Speech Review, Rockford Sansom, Rena Cook, Julia Guichard, Jeff Morrison, Mandy Rees, Lynn Watson Jan 2020

Celebrating The Twentieth Anniversary Of The Voice And Speech Review, Rockford Sansom, Rena Cook, Julia Guichard, Jeff Morrison, Mandy Rees, Lynn Watson

Faculty Publications

No abstract provided.


Evaluation Of Yield, Marketability, And Nitrate Levels Of Lettuce Cultivars Produced In Southern Louisiana, William D. Afton, Kathryn K. Fontenot, Jeff S. Kuehny, Carl E. Motsenbocker Jan 2020

Evaluation Of Yield, Marketability, And Nitrate Levels Of Lettuce Cultivars Produced In Southern Louisiana, William D. Afton, Kathryn K. Fontenot, Jeff S. Kuehny, Carl E. Motsenbocker

Faculty Publications

Forty-five cultivars of lettuce (Lactuca sativa) were field-grown using best management practices at the Louisiana State University Agricultural Center (LSU AgCenter) Botanic Gardens in Baton Rouge during the Fall 2011 and Fall 2012 seasons. Recommended cultivars were selected for commercial production in Louisiana based on fresh weight and lettuce size (width and height). Nitrate (NO3– ) concentration was analyzed for each cultivar, as lettuces are known to accumulate and concentrate NO3–, and were then compared with the U.S. Environmental Protection Agency’s (EPA) oral reference dose (RfD—the EPA’s maximum acceptable oral dose of a toxic substance) of 1.6 mg NO3-nitrogen (N) …


Boxed In: Beliefs About The Compatibility And Likability Of Mother-Occupation And Father-Occupation Role Combinations, Mary C. Noonan, Freda B. Lynn, Mark H. Walker Jan 2020

Boxed In: Beliefs About The Compatibility And Likability Of Mother-Occupation And Father-Occupation Role Combinations, Mary C. Noonan, Freda B. Lynn, Mark H. Walker

Faculty Publications

Researchers have long noted that role expectations of a “good” mother conflict with those of a “good” worker, described as the “cultural contradiction” of motherhood. But given that work roles vary tremendously in terms of the cultural meanings the public assigns them, the authors examine variability in the perceived compatibility of mother-occupation and father-occupation combinations. Building on previous research, the authors hypothesize that (1) some parent-occupation pairings will be viewed as significantly less compatible because of incongruent expectations and meanings, and (2) incumbents of supposedly compatible parent-occupation pairings will be evaluated more favorably than incumbents of incompatible pairings. Both hypotheses …


Gender Contexts, Dowry And Women's Health In India: A National Multilevel Longitudinal Analysis, Samuel Stroope, Rhiannon A. Kroeger, Jiabin Fan Jan 2020

Gender Contexts, Dowry And Women's Health In India: A National Multilevel Longitudinal Analysis, Samuel Stroope, Rhiannon A. Kroeger, Jiabin Fan

Faculty Publications

Gender-biased contexts may impact women's lives across a variety of domains. This study examined whether changes in district prevalence of a salient gendered practice - dowry - are associated with changes in poor health for women in India. Two waves of national multilevel panel data were used to assess the relationship between changes in district-level dowry prevalence and changes in self-rated health for 23,785 ever-married women aged 15-50 years. Increased dowry prevalence was found to be associated with increased poor self-rated health for women. This relationship remained when controlling for potentially confounding factors including household socioeconomic status, caste, infrastructure, mobility …