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Decay Of Oil Residues In The Soil Is Enhanced By The Presence Of Spartina Alterniflora, With No Additional Effect From Microbiome Manipulation, Stephen K. Formel, Allyson M. Martin, John H. Pardue, Vijaikrishnah Elango, Kristina Johnson, Claudia K. Gunsch, Emilie Lefèvre, Paige M. Varner, Yeon Ji Kim, Brittany M. Bernik, Sunshine A. Van Bael Jan 2022

Decay Of Oil Residues In The Soil Is Enhanced By The Presence Of Spartina Alterniflora, With No Additional Effect From Microbiome Manipulation, Stephen K. Formel, Allyson M. Martin, John H. Pardue, Vijaikrishnah Elango, Kristina Johnson, Claudia K. Gunsch, Emilie Lefèvre, Paige M. Varner, Yeon Ji Kim, Brittany M. Bernik, Sunshine A. Van Bael

Faculty Publications

Recent work has suggested that the phytoremediation potential of S. alterniflora may be linked to a selection by the plant for oil-degrading microbial communities in the soil, in combination with enhanced delivery of oxygen and plant enzymes to the soil. In salt marshes, where the soil is saline and hypoxic, this relationship may be enhanced as plants in extreme environments have been found to be especially dependent on their microbiome for resilience to stress and to respond to toxins in the soil. Optimizing methods for restoration of oiled salt marshes would be especially meaningful in the Gulf of Mexico, where …


Classification Of Surface Pavement Cracks As Top-Down, Bottom-Up, And Cement-Treated Reflective Cracking Based On Deep Learning Methods, Nirmal Dhakal, Mostafa A. Elseifi, Zia U.A. Zihan, Zhongjie Zhang, Christophe N. Fillastre, Jagannath Upadhyay Jan 2022

Classification Of Surface Pavement Cracks As Top-Down, Bottom-Up, And Cement-Treated Reflective Cracking Based On Deep Learning Methods, Nirmal Dhakal, Mostafa A. Elseifi, Zia U.A. Zihan, Zhongjie Zhang, Christophe N. Fillastre, Jagannath Upadhyay

Faculty Publications

The treatment and repair strategies for reflective and fatigue cracking that initiate at the pavement surface (i.e., top-down cracking) and at the bottom of the asphalt concrete layer (i.e., bottom-up cracking) are noticeably different. However, pavement management engineers are facing difficulties in identifying these cracks in the field because they usually appear in visually identical patterns. The objective of this study was to develop artificial neural network (ANN) and convolutional neural network (CNN) applications to differentiate and classify top-down, bottom-up, and cement-treated reflective cracking in in-service flexible pavements using deep-learning models. The developed CNN model achieved an accuracy of 93.8% …


Event-Triggered Prediction-Based Delay Compensation Approach, Frederic Mazenc, Michael Malisoff, Corina Barbalata Jan 2022

Event-Triggered Prediction-Based Delay Compensation Approach, Frederic Mazenc, Michael Malisoff, Corina Barbalata

Faculty Publications

We provide a new event-triggered delay compensation approach for linear systems with arbitrarily long constant input delays. Our prediction map is expressible as a solution of a discrete time system. Our method ensures input-to-state stability. We also provide an analog under measurement delays, where the prediction map is expressible as a solution of a continuous-discrete system. Significant novel features are our combined use of matrices of absolute values and our prediction based event triggers, instead of Euclidean norms, and the fact that the predictor dynamics always has the same dimension as that of the original system. Our marine robotic example …


Event-Triggered Control For Continuous-Time Linear Systems With A Delay In The Input, Frederic Mazenc, Michael Malisoff, Corina Barbalata Jan 2022

Event-Triggered Control For Continuous-Time Linear Systems With A Delay In The Input, Frederic Mazenc, Michael Malisoff, Corina Barbalata

Faculty Publications

We provide an event-triggered control technique for a family of linear time-varying continuous-time systems with a constant known pointwise delay in the input. We adopt a subpredictor based prediction technique, and we provide sufficient conditions that ensure that Zeno behavior does not occur. At each time, only delayed measurements are needed to implement the control. Also, the delay can be an arbitrarily large constant. We prove an input-to-state stability property for the closed-loop system, using the theory of cooperative systems. We apply our method to a gyroscopic control problem for a curve tracking dynamics arising in marine robotics.


Mental Illness As A Vulnerability For Sexual Assault: A Retrospective Study Of 7,455 Sexual Assault Forensic Medical Examinations, Leslie Miles, Julie L. Valentine, Linda Mabey, Nancy R. Downing Jan 2022

Mental Illness As A Vulnerability For Sexual Assault: A Retrospective Study Of 7,455 Sexual Assault Forensic Medical Examinations, Leslie Miles, Julie L. Valentine, Linda Mabey, Nancy R. Downing

Faculty Publications

Background: Persons with severe mental illness (MI) are at a high risk of becoming victims of sexual assault (SA). Vulnerability for SA with any type of MI is unknown. This study aimed to identify the prevalence of preexisting MI and other significant factors in patients reporting preexisting MI at the time of their SA medical forensic examinations (SAMFEs).

Method: A retrospective SAMFE chart review of patients ( N = 7,455) from 2010 to 2020 was conducted. Sexual assault nurse examiners completed SAMFEs. Inclusion criteria included (a) aged 14 years and older, (b) completed SAMFE with SA kit evidence collection, and …


Survey Of Recent Applications Of Artificial Intelligence For Detection And Analysis Of Covid-19 And Other Infectious Diseases, Richard S. Segall, Vidhya Sankarasubbu Jan 2022

Survey Of Recent Applications Of Artificial Intelligence For Detection And Analysis Of Covid-19 And Other Infectious Diseases, Richard S. Segall, Vidhya Sankarasubbu

Faculty Publications

The purpose is to illustrate how artificial intelligence (AI) technologies have been used for detection and analysis of COVID-19 and other infectious diseases such as breast, lung, and skin cancers; heart disease; and others. Specifically, the use of neural networks (NN) and machine learning (ML) are described along with which countries are creating these techniques and how these are being used for COVID-19 or other disease diagnosis and detection. Illustrations of multi-layer convolutional neural networks (CNN), recurrent neural networks (RNN), and deep neural networks (DNN) are provided to show how these are used for COVID-19 or other disease detection and …


Using Open-Source Software For Business, Urban, And Other Applications Of Deep Neural Networks, Machine Learning, And Data Analytics Tools, Richard S. Segall, Vidhya Sankarasubbu Jan 2022

Using Open-Source Software For Business, Urban, And Other Applications Of Deep Neural Networks, Machine Learning, And Data Analytics Tools, Richard S. Segall, Vidhya Sankarasubbu

Faculty Publications

This article provides an overview with examples of what Neural Networks (NN), Machine Learning (ML), and Artificial Intelligence (AI) and Data Analytics are, and with their applications in business, urban and biomedical situations. The characteristics of 29 types of neural networks are provided including their distinctive graphical illustrations. A survey of current open-source software (OSS) for neural networks, neural network software available for free trial download for limited time use, open-source software (OSS) for Machine Learning (ML), and open-source software (OSS) for Data Analytics tools are provided. Characteristics of Artificial Intelligence (AI) technologies for Machine Learning available as open-source are …


White Injury And Innocence: On The Legal Future Of Antiracism Education, Osamudia James Jan 2022

White Injury And Innocence: On The Legal Future Of Antiracism Education, Osamudia James

Faculty Publications

In the wake of the “racial reckoning” of 2020, antiracism education attracted intense attention and prompted renewed educator commitments to teach more explicitly about the function, operation, and harm of racism in the United States. The increased visibility of antiracism education engendered sustained critique and opposition, resulting in executive orders prohibiting its adoption in the federal government, the introduction or adoption of over sixty state-level bills attempting to control how race is taught in schools, and a round of lawsuits challenging antiracism education as racially discriminatory. Because antiracism so directly runs afoul of norms underlying American antidiscrimination law, including anticlassification, …


How To Bring Your Kids Up Queer: Family Law Realism, Then And Now, Kris Franklin, Noa Ben-Asher Jan 2022

How To Bring Your Kids Up Queer: Family Law Realism, Then And Now, Kris Franklin, Noa Ben-Asher

Faculty Publications

(Excerpt)

Paula Ettelbrick fought for us.

As a pragmatic and radical litigator, Ettelbrick spent years trying to use a frequently uncomprehending and often outright hostile court system to protect LGBTQ+ Americans. While her work took her into the many areas of law that touched queer lives, a special focus and passion of her advocacy was reserved for queer families.

Paula also tried to warn us.

In the absence of legal recognition for the families we construct, queer lives are rendered not just invisible but virtually nonexistent; we become legal strangers to our loved ones in ways that violently obliterate our …


Interest-Based Incorporation: Statutory Realism Exploring Federalism, Delegation, And Democratic Design, Sheldon Evans Jan 2022

Interest-Based Incorporation: Statutory Realism Exploring Federalism, Delegation, And Democratic Design, Sheldon Evans

Faculty Publications

Statutory interpretation is a unique legal field that appreciates fiction as much as fact. For years, judges and scholars have acknowledged that canons of interpretation are often based on erudite assumptions of how Congress drafts federal statutes. But a recent surge in legal realism has shown just how erroneous many of these assumptions are. Scholars have created a robust study of congressional practices that challenge many formalist canons of interpretation that are divorced from how Congress thinks about, drafts, and enacts federal statutes. This conversation, however, has yet to confront statutory incorporation, which describes when Congress incorporates state law into …


Triton Haze Analogs: The Role Of Carbon Monoxide In Haze Formation, Sarah E. Moran, Sarah M. Hörst, Chao He, Michael J. Radke, Joshua A. Sebree, Noam R. Izenberg, Véronique Vuitton, Laurène Flandinet, François Régis Orthous-Daunay, Cédric Wolters Jan 2022

Triton Haze Analogs: The Role Of Carbon Monoxide In Haze Formation, Sarah E. Moran, Sarah M. Hörst, Chao He, Michael J. Radke, Joshua A. Sebree, Noam R. Izenberg, Véronique Vuitton, Laurène Flandinet, François Régis Orthous-Daunay, Cédric Wolters

Faculty Publications

Triton is the largest moon of the Neptune system and possesses a thin nitrogen atmosphere with trace amounts of carbon monoxide and methane, making it of similar composition to that of the dwarf planet Pluto. Like Pluto and Saturn's moon Titan, Triton has a haze layer thought to be composed of organics formed through photochemistry. Here, we perform atmospheric chamber experiments of 0.5% CO and 0.2% CH4 in N2 at 90 K and 1 mbar to generate Triton haze analogs. We then characterize the physical and chemical properties of these particles. We measure their production rate, their bulk composition with …


Termination Of Parental Rights As A Private Remedy: Rationales, Realities, And Remedies, Deirdre M. Smith Jan 2022

Termination Of Parental Rights As A Private Remedy: Rationales, Realities, And Remedies, Deirdre M. Smith

Faculty Publications

Terminating a parent’s rights—a drastic measure—is commonly associated with public child welfare proceedings, where a state or county child protective services agency has removed a child from their home based on findings of abuse or neglect. In fact, state laws across the country also permit private individuals to petition a court to terminate another person’s parental rights. While private termination actions are not uncommon, there has been scant scholarly examination of these matters, their underlying purposes, and their role in contemporary family law. Termination of parental rights orders in any context interfere with parents’ fundamental constitutional rights, but parents in …


The Boundaries Of Multi-Parentage, Jessica Feinberg Jan 2022

The Boundaries Of Multi-Parentage, Jessica Feinberg

Faculty Publications

Multi-parentage has arrived. In recent years, a growing number of courts and legislatures have recognized that a child may have more than two legal parents. A number of significant societal, medical, and legal developments have contributed to the trend toward multi-parentage recognition. The traditional family structure of a married different-sex couple and their biological children currently represents only a minority of U.S. families. Stepparents, non-marital partners of legal parents, and extended family members often play a significant role in children’s lives, and it has become increasingly common for same-sex couples to welcome children into their families. In addition, advancements in …


Band Gap Information Extraction From Materials Science Literature – A Pilot Study, Satanu Ghosh, Kun Lu Jan 2022

Band Gap Information Extraction From Materials Science Literature – A Pilot Study, Satanu Ghosh, Kun Lu

Faculty Publications

Purpose

The purpose of this paper is to present a preliminary work on extracting band gap information of materials from academic papers. With increasing demand for renewable energy, band gap information will help material scientists design and implement novel photovoltaic (PV) cells.

Design/methodology/approach

The authors collected 1.44 million titles and abstracts of scholarly articles related to materials science, and then filtered the collection to 11,939 articles that potentially contain relevant information about materials and their band gap values. ChemDataExtractor was extended to extract information about PV materials and their band gap information. Evaluation was performed on randomly sampled information records …


“Wilfrid Sellars And Liberal Naturalism”, Willem A. Devries Jan 2022

“Wilfrid Sellars And Liberal Naturalism”, Willem A. Devries

Faculty Publications

An examination of Wilfrid Sellars' somewhat problematic relation to liberal naturalism


State-Level Policy Environments, Discrimination, And Victimization Among Sexual And Gender Minority People, Kristen D. Clark, Mitchell R. Lunn, Eliot M. Lev, Michael A. Trujillo, Micah E. Lubensky, Matthew R. Capriotti, Thomas J. Hoffmann, Juno Obedin-Maliver, Annesa Flentje Jan 2022

State-Level Policy Environments, Discrimination, And Victimization Among Sexual And Gender Minority People, Kristen D. Clark, Mitchell R. Lunn, Eliot M. Lev, Michael A. Trujillo, Micah E. Lubensky, Matthew R. Capriotti, Thomas J. Hoffmann, Juno Obedin-Maliver, Annesa Flentje

Faculty Publications

Legislation has been passed in some states to reduce discrimination and victimization toward sexual and gender minority people (SGM; people who are not solely heterosexual and/or whose gender identity is not equal to what is socially associated with sex assigned at birth). The purpose of these analyses is to test whether state-level policy environments are associated with past-year discrimination and victimization among SGM people. Cross-sectional data from The Population Research in Identity and Disparities for Equality (PRIDE) Study annual questionnaire (collected 2018–2019), a national study of the health of SGM adults in the USA, were used for these analyses. Measures …


“Usefulness Without Use," Or, The Power Of The Virtual: Lu Xun On The Vital Efficacy Of Literature, Wenjin Cui Jan 2022

“Usefulness Without Use," Or, The Power Of The Virtual: Lu Xun On The Vital Efficacy Of Literature, Wenjin Cui

Faculty Publications

This article explores Lu Xun’s distinct view of the vital efficacy of literature, as

captured in his well-known conception of literature’s “usefulness without use.”

Starting with the highly idealistic vision of his youthful years, which posits an

unmediated flow of power from the free play of poetry to the direct action of politics,

I follow Lu Xun on the strenuous and crisis-ridden path he took in coming to terms

with the uselessness of literature vis-à-vis the power of politics, until he finally

reaffirmed the vital power of literature by pitching the self-transcending virtual

impetus of literature against the conservative actual …


Introducing Undergraduates To Instructional Design In A Graduate Studio: An Experiential, Model-Centered Approach, Rebecca Stull Zundell, William Sowards, Scott L. Howell, Jason K. Mcdonald Jan 2022

Introducing Undergraduates To Instructional Design In A Graduate Studio: An Experiential, Model-Centered Approach, Rebecca Stull Zundell, William Sowards, Scott L. Howell, Jason K. Mcdonald

Faculty Publications

This case study describes a combined graduate and undergraduate instructional design studio that introduced undergraduate students to instructional design in a multifaceted, holistic, and applied way. Reviewing the experience of the undergraduates in the course, this design case describes four learning interventions used to create this applied experience: (1) instructional design team projects—one non-profit and the other in higher education, (2) weekly seminars and biweekly training sessions from field experts, (3) an experiential out-of-state trip, and (4) weekly reflection journals. These studio-based learning interventions are presented within the context of the Experiential Learning Theory and Model-Centered Instruction. Overall, the course …


Macroarchaeology, Epistomology, And The Quality Of The Archaeological Record, James R. Allison Jan 2022

Macroarchaeology, Epistomology, And The Quality Of The Archaeological Record, James R. Allison

Faculty Publications

Perrault (2019) combines a critique of current archaeological practice with a call to re-center research on questions of culture history as well as “macroarchaeology”, or the search for large-scale patterns of human behavior and cultural development. His arguments for what archaeologists should do (and stop doing) are driven by the way the quality of the archaeological record underdetermines the answers to questions that archaeologists often seek to answer. There is much to like in Perrault’s arguments, but there also are some problematic aspects. I agree that something like Perrault’s macroarchaeology should receive greater focus within the discipline, and that archaeologists …


Final Thoughts And Observations, James R. Allison, Heidi Roberts, Jerry D. Spangler Jan 2022

Final Thoughts And Observations, James R. Allison, Heidi Roberts, Jerry D. Spangler

Faculty Publications

This chapter addresses three topics inspired by the discoveries made during Jackson Flat’s archaeological investigations. The first topic examines the implications of the discovery of early maize agriculture in the Far Western region. Our data suggest that the Far Western Basketmaker tradition developed on a trajectory separate from the Western Basketmaker groups associated with the White Dog Phase in the Four Corners region.


Sr. Ciencia And El Mago: A Legacy Of Archaeological Discovery And Lifelong Learning, Michael T. Searcy Jan 2022

Sr. Ciencia And El Mago: A Legacy Of Archaeological Discovery And Lifelong Learning, Michael T. Searcy

Faculty Publications

As partners in the pursuit of archaeological discovery, Paul Minnis and Michael Whalen developed an enduring professional relationship that resulted in productive careers marked by multiple field projects and numerous scholarly publications. While engaged in academic archaeology, they also fostered a new generation of archaeologists along the way. An integral part of their pedagogy was carried out in the field where students worked alongside Mike and Paul, learning not only how to carry out an archaeological project from beginning to end, but also how to collaborate in a field of study that has become increasingly interdisciplinary. This paper presents my …


Parent–Child Leisure And Parent Affect: The Role Of Family Structure, Camilla Hodge, Jocelyn Wikle Jan 2022

Parent–Child Leisure And Parent Affect: The Role Of Family Structure, Camilla Hodge, Jocelyn Wikle

Faculty Publications

This study evaluates differences in parent–child leisure and parent affect across single- and two-parent families. The Ecology of Family Experiences framework suggests contextual factors such as family structure and the novelty of the activity environment contribute to heterogeneity in how parents experience leisure, partly because constraints may differ across family structures. Using a large, nationally representative data sample of parents from the American Time Use Survey (N = 78,353), this study shows single-parents experience leisure deficits compared to other parents, and leisure deficits are greatest in home-based leisure. Additionally, using a subsample (N = 16,214), we found that at-home leisure …


Leisure, Eudaimonic Behavior, Physical Activity And Well-Being Of Older Adults, Jungsu Ryu, Jinmoo Heo, Gary Ellis, Mark A. Widmer Jan 2022

Leisure, Eudaimonic Behavior, Physical Activity And Well-Being Of Older Adults, Jungsu Ryu, Jinmoo Heo, Gary Ellis, Mark A. Widmer

Faculty Publications

This study explored how different types of daily experiences (leisure activity, eudaimonic behaviors) and select habits and dispositions (neuroticism, dispositional depression, physical activity level), are related to situational well-being (situational depression, immediate positive affect) among older adults from a community center. Six hundred thirty-eight situational experience sampling observations were provided by 19 participants ranging in age from 59 to 81 years (M¼68.68, SD¼7.17). Each participant was signaled on five randomly selected occasions each day for seven consecutive days. Upon receiving a signal, participants completed questionnaires measuring their activity participation and situational well-being at the time of the signal. Significant predictors …


Foundations Of Online Learning: Challenges And Opportunities, Christine Greenhow, Charles R. Graham, Matthew J. Koehler Jan 2022

Foundations Of Online Learning: Challenges And Opportunities, Christine Greenhow, Charles R. Graham, Matthew J. Koehler

Faculty Publications

Online learning—learning that involves interactions that are mediated through using digital, typically internet-based, technology—is pervasive, multi-faceted, and evolving, creating opportunities and challenges for educational research in the wake of the COVID-19 pandemic. In this special issue, we advance an interdisciplinary agenda for online learning research at the intersection of educational technology, educational psychology, and the learning sciences. In this first article in the issue, we define online learning including its variants, review historical and current contexts, explore its multidimensionality, and assert key issues shaping contemporary online learning. We propose five important lenses: community, engagement, pedagogy, equity, and design-based research, through …


The Most Dangerous Branch Of Science? Reining In Rogue Research And Reckless Experimentation In Social Services, James G. Dwyer Jan 2022

The Most Dangerous Branch Of Science? Reining In Rogue Research And Reckless Experimentation In Social Services, James G. Dwyer

Faculty Publications

Most people are unaware how much public policy is either lacking in any empirical-research support or driven by bad research. Political actors motivated by ideology or donor/constituent demands propose new government practices—in areas ranging from policing to funding of treatments for gender dysphoria in youth to welfare-qualification rules—that will greatly impact people’s lives, and if anyone asks what basis they have for thinking the impact will be good, they can readily find some study to support their case. Especially when powerless populations are put at risk, neither the legislative process nor peer review in the publication process provides a real …


Measuring Social Connectedness During Shared Leisure Activities Using Oxytocin: A Comparison Of Sampling Urine Versus Saliva, Karen K. Melton, Camilla Hodge, Madeline L. Haron, Maria Boccia Jan 2022

Measuring Social Connectedness During Shared Leisure Activities Using Oxytocin: A Comparison Of Sampling Urine Versus Saliva, Karen K. Melton, Camilla Hodge, Madeline L. Haron, Maria Boccia

Faculty Publications

Leisure experiences are often associated with social connectedness. One measure of social connection underutilized in leisure studies is the neurohormone oxytocin. This methodological note considers issues researchers need to address when incorporating oxytocin in their study design. Noninvasive sources for sampling oxytocin include saliva and urine; however, the decision about which method to employ is not well documented. This study provides the first methodological note on collecting oxytocin in leisure studies and provides a comparison of urine vs. saliva measures for oxytocin in the context of leisure activities. Our findings indicate that urine samples are more sensitive to oxytocin change …


The Clean Water Act At 50: Is The Act Obsolete?, Jonathan H. Adler Jan 2022

The Clean Water Act At 50: Is The Act Obsolete?, Jonathan H. Adler

Faculty Publications

As an introduction to “The Clean Water Act at 50” symposium, this Article explores the question of statutory obsolescence in the particular context of the CWA. Part I considers the phenomenon of statutory obsolescence and what it means to say that a given statute is “obsolete.” Part II then evaluates the CWA, identifying the reasons one might conclude that the Act is (or is not) obsolete. Part III then considers what could be done about the CWA’s obsolescence if, in fact, one concludes it is obsolete.

This abstract has been taken from the author's introduction.


Antidiscrimination Law Through A Sociolegal Lens, Anna Offit Jan 2022

Antidiscrimination Law Through A Sociolegal Lens, Anna Offit

Faculty Publications

This Symposium invites reflection on whether the Anthropology of Law has “any space left for the content of rules” at a time when the concerns of legal anthropologists have largely shifted to processes, materials, and practices that are “adjacent to law.” Taking the jury system as an illustrative case, this Essay advocates for the relevance and value of the anthropological study of rules, their content, and their effects. Looking in particular at antidiscrimination rules derived from Batson v. Kentucky, decided in 1986, it argues that a sociolegal, ethnographic approach to how lawyers perpetuate discrimination in jury selection offers insight …


A Framework For Phronetic Ldt Theory, Jason K. Mcdonald Jan 2022

A Framework For Phronetic Ldt Theory, Jason K. Mcdonald

Faculty Publications

My purpose in this chapter is to offer a reimagined view of theory in the field of learning design and technology (LDT). Instead of viewing theory as an external storehouse of knowledge, or a rule-like system for professionals to apply, in this framework theory is viewed as an orienting aid that supports practitioners as they refine their personal capacities for perception, discrimination, and judgment. Theory plays this orienting role as it offers insights into LDT-relevant practical knowledge, productive heuristics, points professionals towards opportunities to act, or identifies significant patterns and forms of excellence to which they can pay attention as …


Hinterlands To Cities: The Archaeology Of Northwest Mexico And Its Vecinos, Matthew C. Pailes, Michael T. Searcy Jan 2022

Hinterlands To Cities: The Archaeology Of Northwest Mexico And Its Vecinos, Matthew C. Pailes, Michael T. Searcy

Faculty Publications

Tis approachable book is a comprehensive synthesis of Northwest Mexico from the US border to the Mesoamerican frontier. Filling a vital gap in the regional literature, it serves as an essential reference not only for those interested in the specific history of this area of Mexico but western North America writ large. A period-by-period review of approximately14,000 years reveals the dynamic connections that knitted together societies inhabiting the Sea of Cortez coast, the Sonoran and Chihuahuan deserts, and the Sierra Madre Occidental. Networks of interaction spanned these diverse ecological, topographical, and cultural terrains in the millennia following the demise of …