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Sympathetic Innervation Of White Adipose Tissue: To Beige Or Not To Beige?, Heike Münzberg, Elizabeth Floyd, Ji Suk Chang Jan 2021

Sympathetic Innervation Of White Adipose Tissue: To Beige Or Not To Beige?, Heike Münzberg, Elizabeth Floyd, Ji Suk Chang

Division of Basic Science Faculty Publications

Obesity research progresses in understanding neuronal circuits and adipocyte biology to regulate metabolism. However, the interface of neuro-adipocyte interaction is less studied. We summarize the current knowledge of adipose tissue innervation and interaction with adipocytes and emphasize adipocyte transitions from white to brown adipocytes and vice versa. We further highlight emerging concepts for the differential neuronal regulation of brown/beige versus white adipocyte and the interdependence of both for metabolic regulation.

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The Ubiquitin Ligase Siah2 Negatively Regulates Glucocorticoid Receptor Activity And Abundance, Susan J. Burke, Jessica L. Taylor, Heidi M. Batdorf, Robert C. Noland, David H. Burk, Yongmei Yu, Z. Elizabeth Floyd, J. Jason Collier Jan 2021

The Ubiquitin Ligase Siah2 Negatively Regulates Glucocorticoid Receptor Activity And Abundance, Susan J. Burke, Jessica L. Taylor, Heidi M. Batdorf, Robert C. Noland, David H. Burk, Yongmei Yu, Z. Elizabeth Floyd, J. Jason Collier

Division of Basic Science Faculty Publications

Glucocorticoids are clinically essential drugs used routinely to control inflammation. However, a host of metabolic side effects manifests upon usage beyond a few days. In the present study, we tested the hypothesis that seven-in-absentia mammalian homolog-2 (SIAH2), a ubiquitin ligase that regulates adipogenesis, is important for controlling adipocyte size, inflammation, and the ability of adipose tissue to expand in response to a glucocorticoid challenge. Using mice with global deletion of SIAH2 exposed or not to corticosterone, we found that adipocytes are larger in response to glucocorticoids in the absence of SIAH2. In addition, SIAH2 regulates glucocorticoid receptor (GR) transcriptional activity …

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Adiposity, Physical Function, And Their Associations With Insulin Resistance, Inflammation, And Adipokines In Ckd, Sankar D. Navaneethan, John P. Kirwan, Erick M. Remer, Erika Schneider, Bryan Addeman, Susana Arrigain, Ed Horwitz, Jeffrey C. Fink, James P. Lash, Charles A. Mckenzie, Mahboob Rahman, Panduranga S. Rao, Jesse D. Schold, Tariq Shafi, Jonathan J. Taliercio, Raymond R. Townsend, Harold I. Feldman, Lawrence J. Appel, Alan S. Go, Jiang He, Robert G. Nelson, Vallabh O. Shah, Mark L. Unruh, James H. Sondheimer Jan 2021

Adiposity, Physical Function, And Their Associations With Insulin Resistance, Inflammation, And Adipokines In Ckd, Sankar D. Navaneethan, John P. Kirwan, Erick M. Remer, Erika Schneider, Bryan Addeman, Susana Arrigain, Ed Horwitz, Jeffrey C. Fink, James P. Lash, Charles A. Mckenzie, Mahboob Rahman, Panduranga S. Rao, Jesse D. Schold, Tariq Shafi, Jonathan J. Taliercio, Raymond R. Townsend, Harold I. Feldman, Lawrence J. Appel, Alan S. Go, Jiang He, Robert G. Nelson, Vallabh O. Shah, Mark L. Unruh, James H. Sondheimer

Division of Basic Science Faculty Publications

Rationale & Objectives: Adiposity and physical fitness levels are major drivers of cardiometabolic risk, but these relationships have not been well-characterized in chronic kidney disease (CKD). We examined the associations of visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), intrahepatic fat, and physical function with inflammation, insulin resistance, and adipokine levels in patients with CKD. Study Design: Prospective cohort study. Setting & Participants: Participants with stages 3-5 CKD not receiving maintenance dialysis, followed up at one of 8 clinical sites in the Chronic Renal Insufficiency Cohort (CRIC) Study, and who underwent magnetic resonance imaging of the abdomen at an annual …

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Bioenergetics Of Islet Preparations In A Pilot Clinical Trial Of Peri-Transplant Hydroxychloroquine For Autologous Islet Transplantation, Ruth E. Mcdowell, Khawla F. Ali, Saloni Lad, Vicente T. San Martin, Rita Bottino, Matthew Walsh, Tyler Stevens, William Wilke, John P. Kirwan, Betul Hatipoglu Jan 2021

Bioenergetics Of Islet Preparations In A Pilot Clinical Trial Of Peri-Transplant Hydroxychloroquine For Autologous Islet Transplantation, Ruth E. Mcdowell, Khawla F. Ali, Saloni Lad, Vicente T. San Martin, Rita Bottino, Matthew Walsh, Tyler Stevens, William Wilke, John P. Kirwan, Betul Hatipoglu

Division of Basic Science Faculty Publications

The inflammatory response is an obstacle to success in both allogeneic and autologous islet transplantation. In autologous islet transplantation (AIT), however, the recipient is also the donor, permitting pretreatment of donor/recipient for a controlled duration prior to transplantation. We sought to exploit this feature of (AIT) by pretreating donor/recipients with chronic pancreatitis undergoing total pancreatectomy and autologous islet transplantation (TPAIT) to test the hypothesis that peri-transplant treatment with the FDA-approved anti-inflammatory hydroxychloroquine (HCQ) improves graft function. In this randomized placebo-controlled pilot clinical study, patients (n = 6) were treated with oral HCQ for 30 days prior to and 90 days …

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Digital Tools To Support Family-Based Weight Management For Children: Mixed Methods Pilot And Feasibility Study, Amanda E. Staiano, Jenelle R. Shanley, Holly Kihm, Keely R. Hawkins, Shannon Self-Brown, Christoph Höchsmann, Melissa C. Osborne, Monique M. Leblanc, John W. Apolzan, Corby K. Martin Jan 2021

Digital Tools To Support Family-Based Weight Management For Children: Mixed Methods Pilot And Feasibility Study, Amanda E. Staiano, Jenelle R. Shanley, Holly Kihm, Keely R. Hawkins, Shannon Self-Brown, Christoph Höchsmann, Melissa C. Osborne, Monique M. Leblanc, John W. Apolzan, Corby K. Martin

Clinical Research Faculty Publications

Background: Family-based behavioral therapy is an efficacious approach to deliver weight management counseling to children and their parents. However, most families do not have access to in-person, evidence-based treatment. We previously developed and tested DRIVE (Developing Relationships that Include Values of Eating and Exercise), a home-based parent training program to maintain body weight among children at risk for obesity, with the intent to eventually disseminate it nationally alongside SafeCare, a parent support program that focuses on parent-child interactions. Currently the DRIVE program has only been tested independently of SafeCare. This study created the “mHealth DRIVE” program by further adapting DRIVE …

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Beyond Weight Loss: Current Perspectives On The Impact Of Calorie Restriction On Healthspan And Lifespan, Maryam Kebbe, Joshua R. Sparks, Emily W. Flanagan, Leanne M. Redman Jan 2021

Beyond Weight Loss: Current Perspectives On The Impact Of Calorie Restriction On Healthspan And Lifespan, Maryam Kebbe, Joshua R. Sparks, Emily W. Flanagan, Leanne M. Redman

Clinical Research Faculty Publications

Introduction: Changes to mental, physical, and physiological functions drive the complex processes underlying the variable progression of human aging. Nutritional interventions are one of the most promising non-pharmacological therapeutics to attenuate aging in humans. This narrative review aims to describe the implications of moderate and prolonged calorie restriction (CR) in healthy adults without obesity that occur beyond weight loss. Areas covered: Findings from CR studies, such as the CALERIE (Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy) trials, the most rigorous trials to date examining a prolonged 25% CR, are described. The main areas covered include; changes to …

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Combustion By-Products And Their Health Effects: Summary Of The 16th International Congress, Angela Violi, Stephania Cormier, Brian Gullett, Stina Jansson, Slawo Lomnicki, Chloe Luyet, Andreas Mayer, Ralf Zimmermann Jan 2021

Combustion By-Products And Their Health Effects: Summary Of The 16th International Congress, Angela Violi, Stephania Cormier, Brian Gullett, Stina Jansson, Slawo Lomnicki, Chloe Luyet, Andreas Mayer, Ralf Zimmermann

Division of Basic Science Faculty Publications

The 16th International Congress on Combustion By-Products and their Health Effects (PIC2019) was held in Ann Arbor, Michigan, from July 10 to 12, 2019. For the last 28 years, this conference has served as an interdisciplinary platform for the discussion of the formation, environmental fate, health effects, policy, and remediation of combustion by-products. The technical areas for PIC2019 included mobile and stationary sources in urban environments, open fires, in- door air pollution, and halogenated pollutants. The congress was sponsored by the National Institute of Environmental Health Sciences (NIEHS), the U.S. EPA, the School of Public Health at the University of …

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Constrained Learning Of Task-Related And Spatially-Coherent Dictionaries From Task Fmri Data, Sreekrishna Ramakrishnapillai, Harris R. Lieberman, Jennifer C. Rood, Stefan M. Pasiakos, Kori Murray, Preetham Shankapal, Owen T. Carmichael Jan 2021

Constrained Learning Of Task-Related And Spatially-Coherent Dictionaries From Task Fmri Data, Sreekrishna Ramakrishnapillai, Harris R. Lieberman, Jennifer C. Rood, Stefan M. Pasiakos, Kori Murray, Preetham Shankapal, Owen T. Carmichael

Clinical Research Faculty Publications

Dictionary learning and sparse coding techniques overcome limitations of traditional voxel-level analyses of task-based functional magnetic resonance imaging (fMRI) data by identifying broader temporal and spatial patterns of brain activity. However, prior applications of these methods to task-related fMRI data are not simultaneously optimized to find temporal patterns of activity that change in concert with changes in task conditions and spatial patterns that leverage existing neuroscience knowledge. In this study we present a new sparse dictionary learning method that uses prior knowledge of the temporal pattern of task conditions and the locations of brain regions hypothesized to be involved in …

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Estrogen, Brain Structure, And Cognition In Postmenopausal Women, Christina P. Boyle, Cyrus A. Raji, Kirk I. Erickson, Oscar L. Lopez, James T. Becker, H. Michael Gach, Lewis H. Kuller, William Longstreth, Owen T. Carmichael, Brandalyn C. Riedel, Paul M. Thompson Jan 2021

Estrogen, Brain Structure, And Cognition In Postmenopausal Women, Christina P. Boyle, Cyrus A. Raji, Kirk I. Erickson, Oscar L. Lopez, James T. Becker, H. Michael Gach, Lewis H. Kuller, William Longstreth, Owen T. Carmichael, Brandalyn C. Riedel, Paul M. Thompson

Clinical Research Faculty Publications

Declining estrogen levels before, during, and after menopause can affect memory and risk for Alzheimer's disease. Undesirable side effects of hormone variations emphasize a role for hormone therapy (HT) where possible benefits include a delay in the onset of dementia—yet findings are inconsistent. Effects of HT may be mediated by estrogen receptors found throughout the brain. Effects may also depend on lifestyle factors, timing of use, and genetic risk. We studied the impact of self-reported HT use on brain volume in 562 elderly women (71–94 years) with mixed cognitive status while adjusting for aforementioned factors. Covariate-adjusted voxelwise linear regression analyses …

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Christian Nationalism And Views Of Immigrants In The United States: Is The Relationship Stronger For The Religiously Inactive?, Samuel Stroope, Heather M. Rackin, Paul Froese Jan 2021

Christian Nationalism And Views Of Immigrants In The United States: Is The Relationship Stronger For The Religiously Inactive?, Samuel Stroope, Heather M. Rackin, Paul Froese

Faculty Publications

Previous research has shown that Christian nationalism is linked to nativism and immigrant animus, while religious service attendance is associated with pro-immigrant views. The findings highlight the importance of distinguishing between religious ideologies and practices when considering how religion affects politics. Using a national sample of U.S. adults, we analyze immigrant views by measuring levels of agreement or disagreement that undocumented immigrants from Mexico are “mostly dangerous criminals.” We find that Christian nationalism is inversely related to pro-immigrant views for both the religiously active and inactive. However, strongly pro-immigrant views are less likely and anti-immigrant views are more likely among …

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Eat Clean And Safe Food: A Food-Based Dietary Guideline For The Elderly In South Africa, Makenzie Miller, Wilna Oldewage-Theron, Carin Napier Jan 2021

Eat Clean And Safe Food: A Food-Based Dietary Guideline For The Elderly In South Africa, Makenzie Miller, Wilna Oldewage-Theron, Carin Napier

Faculty Publications

As the population of elderly individuals in South Africa (SA) grows, there is a need to promote the continued health of these persons as they progress through the life cycle. Food Based Dietary Guidelines (FBDGs) for the SA elderly were developed to address this need. These thirteen guidelines for the elderly collectively offer a basis of health practices that the elderly can follow to ensure that they are taking the right steps toward maintaining their health. While the guideline ‘Eat clean and safe food’ is not included in the current SA FBDGs, this recommendation is of particular importance to the …

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Food And Beverages Promoting Elderly Health: Six Food-Based Dietary Guidelines To Plan Good Mixed Meals For Elderly South Africans, Sanjoy Saha, Upasana Mukherjee, Makenzie Miller, Li Ling Peng, Carin Napier, Heleen Grobbelaar, Wilna Oldewage-Theron Jan 2021

Food And Beverages Promoting Elderly Health: Six Food-Based Dietary Guidelines To Plan Good Mixed Meals For Elderly South Africans, Sanjoy Saha, Upasana Mukherjee, Makenzie Miller, Li Ling Peng, Carin Napier, Heleen Grobbelaar, Wilna Oldewage-Theron

Faculty Publications

Studies have shown that the elderly are at a higher risk of developing malnutrition due to physiological and pathological changes. Several studies have confirmed that older South Africans have insufficient dietary diversity, resulting in nutritional deficiencies. Furthermore, poor and uninformed dietary choices are associated with the development of several diseases and increased mortality. Following the Elderly Food Based Dietary Guidelines (EFBDGs) related to promoting elderly health could ensure that the elderly have an adequate intake of nutritious foods. This paper provides an overview of six FBDGs relating to promoting health and is based on the South African Food Based Dietary …

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Effects Of Immersion In Fermented Tea Liquid And Steam Treatments On Physicochemical Properties And Ginsenoside Profiles Of Korean Ginseng, Peerarat Doungtip, Kyung Tack Kim, Hee Do Hong, Shin Eun Ju, Jae Woong Choi, Thanyaporn Siriwoharn, Witoon Prinyawiwatkul, Sujinda Sriwattana Jan 2021

Effects Of Immersion In Fermented Tea Liquid And Steam Treatments On Physicochemical Properties And Ginsenoside Profiles Of Korean Ginseng, Peerarat Doungtip, Kyung Tack Kim, Hee Do Hong, Shin Eun Ju, Jae Woong Choi, Thanyaporn Siriwoharn, Witoon Prinyawiwatkul, Sujinda Sriwattana

Faculty Publications

The study was performed to investigate some changes in physicochemical characteristics and ginsenoside profiles of Korean ginseng after being subjected to immersion in fermented tea liquid (FTL) [at a ratio of ginseng powder: FTL; 1:4, 1:6, and 1:8, w/w] and steam treatments (with and/or without steam). The ratio at 1:4 w/w showed the highest yield of bioactive components and was, therefore, selected to evaluate the effects of steam conditions [temperatures (60, 80, and 100°C) and times (1, 2, and 3 hr)]. The sample treated with FTL, regardless of the steam treatment, had darker color and higher antioxidant activity (IC50 for …

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Cross-Country Analysis Of Supply Chain Management Drivers For Small And Medium-Sized Enterprises, Santi Setyaningsih, Katalin Feketéné Czakó, Tihana Vasic, Peter Kelle Jan 2021

Cross-Country Analysis Of Supply Chain Management Drivers For Small And Medium-Sized Enterprises, Santi Setyaningsih, Katalin Feketéné Czakó, Tihana Vasic, Peter Kelle

Faculty Publications

Supply Chain Management (SCM) drivers are the key factors in successful SCM strategy implementation. SMEs with limited resources need to focus on the top drivers to improve performance and competitiveness. The paper explores which driver factors have the largest importance according to the opinion of the top managers of SMEs. Two developing countries were compared which have different supply chain environments mainly due to their geographical structure. Information from top managers of 105 Hungarian and 124 Indonesian SMEs was collected using an online questionnaire. The data was analysed using statistical methods. This study is the first to rank SCM drivers …

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Solopreneur Digital Ecosystems: Genesis, Lineage And Preliminary Categorization, Gabriele Piccoli, Biagio Palese, Joaquin Rodriguez Jan 2021

Solopreneur Digital Ecosystems: Genesis, Lineage And Preliminary Categorization, Gabriele Piccoli, Biagio Palese, Joaquin Rodriguez

Faculty Publications

This paper traces the genesis and lineage of solopreneur digital ecosystems. These ecosystems, fostered by a digital environment that is infrastructural, combinatorial and servitized, are enabling the rise to prominence of the solopreneur. We theorize solopreneur digital ecosystems as the latest incarnation of systems beyond firm control, with digital platforms and digital marketplaces as their principal enablers. In an effort to compare them from the perspective of the solopreneur, we categorize solopreneur digital ecosystems on three dimensions: algorithmic control, commoditization, and lock-in. Our work contributes a framework that solopreneurs can use to identify ecosystems in which they can optimally invest …

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Solopreneur Digital Ecosystems: Genesis, Lineage And Preliminary Categorization, Gabriele Piccoli, Biagio Palese, Joaquin Rodriguez Jan 2021

Solopreneur Digital Ecosystems: Genesis, Lineage And Preliminary Categorization, Gabriele Piccoli, Biagio Palese, Joaquin Rodriguez

Faculty Publications

This paper traces the genesis and lineage of solopreneur digital ecosystems. These ecosystems, fostered by a digital environment that is infrastructural, combinatorial and servitized, are enabling the rise to prominence of the solopreneur. We theorize solopreneur digital ecosystems as the latest incarnation of systems beyond firm control, with digital platforms and digital marketplaces as their principal enablers. In an effort to compare them from the perspective of the solopreneur, we categorize solopreneur digital ecosystems on three dimensions: algorithmic control, commoditization, and lock-in. Our work contributes a framework that solopreneurs can use to identify ecosystems in which they can optimally invest …

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Tripbam: Creating Digital Value During The Covid-19 Pandemic, Gabriele Piccoli, Federico Pigni, Barbara Wixom, Joaquin Rodriguez Jan 2021

Tripbam: Creating Digital Value During The Covid-19 Pandemic, Gabriele Piccoli, Federico Pigni, Barbara Wixom, Joaquin Rodriguez

Faculty Publications

TRIPBAM pioneered automated clustered rate monitoring in the hotel industry. As the technology startup prepared for a successful exit that would reward founders, employees, and investors for their success, the coronavirus disease of 2019 (COVID-19) pandemic hit. The case chronicles TRIPBAM’s leadership’s fast reaction and discusses the strategic initiatives the firm put in place to set itself up for a return to growth after the crisis.

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Peridynamics For Quasistatic Fracture Modeling, Debdeep Bhattacharya, Patrick Diehl, Robert P. Lipton Jan 2021

Peridynamics For Quasistatic Fracture Modeling, Debdeep Bhattacharya, Patrick Diehl, Robert P. Lipton

Faculty Publications

Fracture involves interaction across large and small length scales. With the application of enough stress or strain to a brittle material, atomistic scale bonds will break, leading to fracture of the macroscopic specimen. From the perspective of mechanics fracture should appear as an emergent phenomena generated by a continuum field theory eliminating the need for a supplemental kinetic relation describing crack growth. We develop a new fast method for modeling quasi-static fracture using peridynamics. We apply fixed point theory and model stable crack evolution for hard and soft loading. For soft loading we recover unstable fracture. For hard loading we …

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Feedback Stabilization With Discrete Measurements Using Bounds On Fundamental Matrices, Frederic Mazenc, Michael Malisoff Jan 2021

Feedback Stabilization With Discrete Measurements Using Bounds On Fundamental Matrices, Frederic Mazenc, Michael Malisoff

Faculty Publications

We prove a new robust stabilization theorem for systems with time-varying disturbances and sampled measurements, using novel bounds on fundamental matrices for systems with disturbances. Our main tools use properties of positive systems and Metzler matrices. Our numerical example illustrates an advantage of using our method instead of previous methods.

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New Fixed Time And Fast Converging Reduced Order Observers, Frederic Mazenc, Michael Malisoff Jan 2021

New Fixed Time And Fast Converging Reduced Order Observers, Frederic Mazenc, Michael Malisoff

Faculty Publications

For nonlinear continuous-time systems with continuous measurements of the output, we provide new reduced order observers that converge in finite time. The convergence time is independent of the initial state. For cases where the measurements are discrete, we provide asymptotically converging observers, whose rate of convergence is proportional to the negative of the logarithm of the size of the sampling interval. Our observers are based on the observability Gramian.

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Dominance Of Deformation In Nuclear Physics, A Link To Symplectic Symmetry, And Roots In Effective Field Theory, J. Draayer, D. Kekejian, G. Sargsyan, T. Dytrych, R. Baker, K. Launey Jan 2021

Dominance Of Deformation In Nuclear Physics, A Link To Symplectic Symmetry, And Roots In Effective Field Theory, J. Draayer, D. Kekejian, G. Sargsyan, T. Dytrych, R. Baker, K. Launey

Faculty Publications

A brief historical review of the important role symmetries have played in our gaining a deeper understanding of nuclear structure is presented. We then focus our attention on the special role that symplectic symmetry plays in exposing a “Dominance of Deformation” that is observed through enhanced B(E2) rates across the Chart of the Nuclides, and in addition, we will show how the No-Core Symplectic Shell Model (NC-SpSM) seems to emerges from a Symplectic Effective Field Theory (Sp-EFT), where the latter prepares a path forward for potentially gaining a truly ab initio understanding of the structure of atomic nuclei. As space …

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Comparison Of Abdominal Visceral Adipose Tissue Measurements In Adolescents Between Magnetic Resonance Imaging And Dual-Energy X-Ray Absorptiometry, Chelsea L. Kracht, Peter T. Katzmarzyk, Amanda E. Staiano Jan 2021

Comparison Of Abdominal Visceral Adipose Tissue Measurements In Adolescents Between Magnetic Resonance Imaging And Dual-Energy X-Ray Absorptiometry, Chelsea L. Kracht, Peter T. Katzmarzyk, Amanda E. Staiano

Population and Public Health Science Faculty Publications

Excess abdominal visceral adipose tissue (VAT) is associated with cardiometabolic risk factors in adolescents. VAT is mainly measured using Magnetic Resonance Imaging (MRI), yet dual-energy x-ray absorptiometry (DXA) is more affordable and available. The purpose was to compare adolescent VAT values obtained by MRI and DXA. A sample of 330 adolescents 10–16 years of age were recruited (52.3% female, 58.5% White). Abdominal VAT was measured using a General Electric (GE) Discovery MRI scanner with imaging software. A whole-body DXA (GE iDXA) scan was performed, and software calculated VAT within the android region. Wilcoxon signed-rank t-tests were used to determine differences …

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Perceptions Of A Pragmatic Family-Centered Approach To Childhood Obesity Treatment, Betty M. Kennedy, Genevieve Davison, Lauren A. Fowler, Erika Rodriguez-Guzman, Myra L. Collins, Alison Baker, Stephen Cook, Jeanne Lindros, Denise E. Wilfley, Ava J. Zebrick, Amanda E. Staiano Jan 2021

Perceptions Of A Pragmatic Family-Centered Approach To Childhood Obesity Treatment, Betty M. Kennedy, Genevieve Davison, Lauren A. Fowler, Erika Rodriguez-Guzman, Myra L. Collins, Alison Baker, Stephen Cook, Jeanne Lindros, Denise E. Wilfley, Ava J. Zebrick, Amanda E. Staiano

Population and Public Health Science Faculty Publications

Background: Few studies have examined both parent and child preferences regarding family-based weight management programs (WMPs) delivered in primary care settings, especially among racial minority populations. The purpose of this study was to determine the perceptions that parents and their children/adolescents have about the components that should be included in a family-based WMP and to identify perceived preferences, benefits, and/or barriers to participation. Methods: A sample of 60 participants (30 parents and 30 children/adolescents) participated in 1 of 5 separate structured focus groups, using probing questions and the nominal group technique (NGT). Parents reported demographics for themselves and their children/adolescents. …

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Does Hand-Dominance Matter In Non-Standard Visuomotor Transformations?, Briasha D. Jones, Arend W.A. Van Gemmert, Marc Dalecki Jan 2021

Does Hand-Dominance Matter In Non-Standard Visuomotor Transformations?, Briasha D. Jones, Arend W.A. Van Gemmert, Marc Dalecki

Faculty Publications

Previous nonstandard visuomotor transformation studies using variations of eye-hand coupling and decoupling tasks focused on dominant hand use. The present study expanded this work by including the non-dominant hand. Twenty-four right-hand dominant adults (M = 21 yrs.; 12 females) slid their index finger along a vertical or horizontal touchscreen to move a cursor that was always displayed in the vertical plane. In four different action-perception conditions, the finger and cursor moved either in the same plane and direction or in the other plane and/or opposite direction. Performance differed between the hands only for movement trajectory related variables but not for …

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Subgroups Of Right-Angled Coxeter Groups Via Stallings-Like Techniques, Pallavi Dani, Ivan Levcovitz Jan 2021

Subgroups Of Right-Angled Coxeter Groups Via Stallings-Like Techniques, Pallavi Dani, Ivan Levcovitz

Faculty Publications

We associate cube complexes called completions to each subgroup of a right-angled Coxeter group (RACG). A completion characterizes many properties of the subgroup such as whether it is quasiconvex, normal, finite-index or torsion-free. We use completions to show that reflection subgroups are quasiconvex, as are one-ended Coxeter subgroups of a 2-dimensional RACG. We provide an algorithm that determines whether a given one-ended, 2-dimensional RACG is isomorphic to some finite-index subgroup of another given RACG. In addition, we answer several algorithmic questions regarding quasiconvex subgroups. Finally, we give a new proof of Haglund’s result that quasiconvex subgroups of RACGs are separable.

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Mitochondrial Dna Indicates Paraphyletic Relationships Of Disjunct Populations In The Neotoma Mexicana Species Group, Giovani Hernández-Canchola, Livia León-Paniagua, Jacob A. Esselstyn Jan 2021

Mitochondrial Dna Indicates Paraphyletic Relationships Of Disjunct Populations In The Neotoma Mexicana Species Group, Giovani Hernández-Canchola, Livia León-Paniagua, Jacob A. Esselstyn

Faculty Publications

Woodrats (genus Neotoma) comprise 24 species found primarily in the United States and México. The Neotoma mexicana species group reaches its southernmost distribution in the highlands of southern México and Central America. Previous research suggested that N. mexi-cana has a discontinuous distribution, whereas N. ferruginea and N. picta have allopatric distributions around the lowlands of the Isthmus of Tehuantepec. However, these hypotheses were suggested with incomplete subspecific sampling near the isthmus. We used samples of N. m. parvidens from the Sierra Sur de Oaxaca and N. m. tropicalis from the Sierra Norte de Oaxaca to assess their taxonomic affinity. Our …

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Effect Of Hydrological Fluctuation On Nutrient Stoichiometry And Trade-Offs Of Carex Schmidtii, Dongjie Zhang, Qing Qi, Shouzheng Tong, Jim Wang, Mingye Zhang, Guanglei Zhu, Xianguo Lu Jan 2021

Effect Of Hydrological Fluctuation On Nutrient Stoichiometry And Trade-Offs Of Carex Schmidtii, Dongjie Zhang, Qing Qi, Shouzheng Tong, Jim Wang, Mingye Zhang, Guanglei Zhu, Xianguo Lu

Faculty Publications

Nutrient stoichiometry and trade-offs focusing on the mass balance of multiple nutrient elements play important roles in the response mechanism of plants to environmental stresses in wetlands. Nonetheless, little is known about the response dynamics and trade-offs of nutrient elements of wetland plants, especially potassium (K), under hydrological fluctuation conditions. Greenhouse experiments have been undertaken to assess the effects of initial water level (DW), water-level amplitude (AW), lasted time and their interactions on the response processes of nutrient stoichiometry of Carex schmidtii. Plant nutrient trade-offs and limitation were investigated under multiple hydrological fluctuation conditions. Results showed that plant nitrogen (N), …

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Current Pest Status And Management Practices For Systena Frontalis (Coleoptera: Chrysomelidae) In Ornamental Plants In The Eastern United States: An Online Survey, Shimat V. Joseph, Juang Horng Chong, Benjamin Campbell, Brian Kunkel, Danny Lauderdale, Stacey Jones, Stanton Gill, Yan Chen, Peter Schultz, David Held, Frank Hale, Adam Dale, Erfan Vafaie, Will Hudson, Dan Gilrein, Alejandro Del Pozo-Valdivia Jan 2021

Current Pest Status And Management Practices For Systena Frontalis (Coleoptera: Chrysomelidae) In Ornamental Plants In The Eastern United States: An Online Survey, Shimat V. Joseph, Juang Horng Chong, Benjamin Campbell, Brian Kunkel, Danny Lauderdale, Stacey Jones, Stanton Gill, Yan Chen, Peter Schultz, David Held, Frank Hale, Adam Dale, Erfan Vafaie, Will Hudson, Dan Gilrein, Alejandro Del Pozo-Valdivia

Faculty Publications

Systena frontalis (F.) (Coleoptera: Chrysomelidae) is an important pest in ornamental plant nurseries in the United States. Information on current pest status and management practices employed by nurseries, garden centers, and landscape care operations are crucial to developing an effective research and extension program for ornamental crops. An online survey was developed and administered by the research team in 2020 to gather data on pest status and current pest management practices. The questionnaire included three focus areas: 1) participant (location, industry type, or operating area); 2) pest status indicators (incidence, affected crops, and estimated loss); and 3) common pest management …

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Sensing Performance Of Knitted Strain Sensor On Two-Dimensional And Three-Dimensional Surfaces, Yutian Li, Xuhong Miao, Jonathan Y. Chen, Gaoming Jiang, Qing Liu Jan 2021

Sensing Performance Of Knitted Strain Sensor On Two-Dimensional And Three-Dimensional Surfaces, Yutian Li, Xuhong Miao, Jonathan Y. Chen, Gaoming Jiang, Qing Liu

Faculty Publications

Flexible strain sensors and their sensing performance have been attractive in human motion detection applications. In this project, a knitted strain sensor was designed and fabricated via the technology of weft-knitting a nylon/nylon-wrapped spandex/silver-coated yarn into a knitted garment. Locations of sensor areas were customized to form a whole piece of knitted garment popular for today's applications in elastic tight-fitting activewear. The sensor provides electrical resistance data as a wearable sensing device for detecting body motions. A new method of using a three-dimensional curved surface to evaluate the sensing performance of the knitted strain sensor was proposed. Compared with the …

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Gge Biplot Projection In Adaptability And Stability Inference Of Soybean In An Agricultural Center Paraná, Brazil1, Kadson Emmanuel Frutuoso Silva, Júlio César Dovale, Roberto Fritsche-Neto, Jean Newton Marques Jan 2021

Gge Biplot Projection In Adaptability And Stability Inference Of Soybean In An Agricultural Center Paraná, Brazil1, Kadson Emmanuel Frutuoso Silva, Júlio César Dovale, Roberto Fritsche-Neto, Jean Newton Marques

Faculty Publications

The state of Paraná is among the main producers of soybeans not only in Brazil, but in the World. However, it presents considerable edaphoclimatic variation throughout its area. This is one of the main causes genotype-by-environment interactions, hindering the selective process as well as the recommendation of cultivars in the state. Therefore, the objective of this study was: (i) to identify the environment that make it possible to represent the conditions of the state of Paraná, in order to facilitate the selection and recommendation of cultivars in future breeding programs; (2) to identify soybean inbres lines stable and adapted to …

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