Digital Commons Network^™

Empowering Urban Traffic Management: Elevated 3d Lidar For Data Collection And Advanced Object Detection Analysis, Nawfal Guefrachi, Hakim Ghazzai, Ahmad Alsharoa

Electrical and Computer Engineering Faculty Research & Creative Works

The 3D object detection capabilities in urban environments have been enormously improved by recent developments in Light Detection and Range (LiDAR) technology. This paper presents a novel framework that transforms the detection and analysis of 3D objects in traffic scenarios by utilizing the power of elevated LiDAR sensors. We are presenting our methodology's remarkable capacity to collect complex 3D point cloud data, which allows us to accurately and in detail capture the dynamics of urban traffic. Due to the limitation in obtaining real-world traffic datasets, we utilize the simulator to generate 3D point cloud for specific scenarios. To support our …

Angle-Dependent Photoinduced Changes Of Near-Infrared Transmission In Amorphous Selenium Films, Kaitlin Hellier, Emily Enlow, Seyedehnajmeh Montazeri, Mina Esmaeelpour, Shiva Abbaszadeh

Electrical and Computer Engineering Faculty Research & Creative Works

Amorphous selenium (a-Se) is a promising semiconductor for a variety of photoconductive applications, predominantly in X-ray detection. In addition, material properties introduce several other potential applications in nonlinear optics. Photodarkening (PD) presents an interesting area of study; when exposed to band-region light, metastable structural changes induce a shift in the band edge and increase tail absorption. In this work, we investigate these effects utilizing a near-infrared (NIR) probe to avoid generating any darkening during beam transmission. We observe an unexpected result; here, we present the effects of band region exposure in NIR transmission (1570 nm). We observe a shift from …

Highly Sensitive Liquid-Level Sensing Based On Microwave Frequency Domain Reflectometry And Interferometry, Chen Zhu, Osamah Alsalman, Jie Huang

Electrical and Computer Engineering Faculty Research & Creative Works

Frequency domain reflectometry (FDR) and interferometry are two widely used investigative techniques that have been instrumented using optical and microwave devices for a diverse array of sensing applications. In this paper, we present a highly sensitive liquid-level sensor using a custom hollow coaxial cable transmission line. Measurements of liquid levels with high sensitivity and resolution can be achieved by both FDR and interferometry-based measurements using the same sensor device. We show that FDR-based measurements are more straightforward for liquid-level sensing and are suitable for both small and large variations of liquid level, while interferometry-based measurements provide slightly higher measurement resolution …

An Effective Method For Long-Term Control Of American Bullfrogs Syntopic With Special-Status Native Amphibians In California, Usa, Jeff A. Alvarez, Jeffery T. Wilcox

Human–Wildlife Interactions

American bullfrogs (Lithobates catesbeianus) are invasive in western North America and are well established in California, USA, where they are widespread. This invasive species has been implicated in the decrease of native amphibian populations and is believed to have contributed to the decline of threatened and endangered amphibians regionally. We utilized air rifles, tin alloy pellets, and 2 shooters to systematically control L. catesbeianus in both lentic and lotic habitat types within 2 counties in California. We visited sites monthly (April through November) for approximately 8 and 14 years to lethally target and remove L. catesbeianus …

Quantifying Wild Pig Disturbance In Pastures And Wetlands Using Unmanned Aerial Vehicle-Derived Imagery, Wesley M. Anderson, Bethany Wight, Raoul K. Boughton

Human–Wildlife Interactions

The use of unmanned aerial vehicles (UAVs) for agricultural and environmental research has increased markedly in recent years, and a key application has been to conduct damage assessments. Invasive wild pigs (Sus scrofa) cause both agricultural and environmental damage, and past studies have utilized UAVs to quantify this damage. Each methodology has advantages, but they also have drawbacks such as high rates of damage omission or reliance upon a near-infrared camera, which may be prohibitively expensive for some land managers and scientists. Our objective was to develop a methodology that could be easily implemented to conduct wild pig …

Coexistence Conservation: Time To Change The Paradigm, Jorge Tobajas

Human–Wildlife Interactions

This letter to the editor recommends that coexistence conservation should be recognized as a new discipline within conservation biology with vast potential for the future of biodiversity conservation. The term “coexistence conservation” must be broadened to accommodate different techniques and their development, regardless of the context of invasive species.

Flashtags: Evaluating A Novel Deterrent To Reduce Livestock Depredation, C. Aaron Bott, Stewart W. Breck, Tom W. Murphy, Brad A. Freking, Carlos A. López González, David Prause, Corey Peavey, Albert Sommers, Coke Landers, Julie K. Young

Human–Wildlife Interactions

Social tolerance of carnivores can be improved by preventing conflicts through nonlethal predator deterrents (e.g., livestock protection dogs [Canis lupus familiaris] and human presence) that have been used for centuries. However, many livestock producers feel the existing preventative methods are inadequate for extensive production systems where livestock can be spread widely and have less human supervision. To address this issue, we developed and tested a new nonlethal tool called FlashTags to reduce livestock predation. FlashTags are ear tags worn by livestock that flash a random-light pattern at night when motion-triggered. In the first year, we tested the devices …

Is Mitigation Translocation An Effective Method For Reducing Laysan Albatross–Military Aircraft Collisions?, Brian E. Washburn, Katherine D. Rubiano, William P. Bukoski

Human–Wildlife Interactions

Wildlife–aircraft collisions (wildlife strikes) pose a serious risk to civil and military aircraft. Each year, Laysan albatrosses (Phoebastria immutabilis) attempt to establish a breeding colony on the airfield at the U.S. Navy’s Pacific Missile Range Facility (PMRF) located on the island of Kaua‘i, Hawai‘i, USA, resulting in a hazard to safe military aircraft operations at this facility. A long-term management program, with an emphasis on mitigation translocation (e.g., live-capture and translocation away from the area) of problematic individuals, has been conducted by the U.S. Department of Agriculture, Wildlife Services. However, the efficacy of mitigation translocation as a nonlethal …

Open Access Is Only The Beginning: Extending The Readership Of Human–Wildlife Interactions Research Through Inclusive Communication Design, Rosanna M. Vail

Human–Wildlife Interactions

Readers must be able to access, understand, and engage with published work, especially in an area like human–wildlife interactions, where viral coverage of altercations with wildlife sparks widespread interest in species or management issues. What should authors be doing to make their writing more inclusive and effective for as many readers as possible? In this article, the managing editor of Human-Wildlife Interactions integrates updated guidelines from the Council of Science Editors with communication frameworks to prioritize a reader-focused approach that extends the reach of article publication.

The Violence Of Free Speech And Press Metaphors, Erin C. Carroll

Georgetown Law Faculty Publications and Other Works

Today, our free speech marketplace is often overwhelming, confusing, and even dangerous. Threats, misdirection, and lies abound. Online firestorms lead to offline violence. This Article argues that the way we conceptualize free speech and the free press are partly to blame: our metaphors are hurting us.

The primary metaphor courts have used for a century to describe free speech—the marketplace of ideas—has been linked to violence since its inception. Originating in a case about espionage and revolution, in a dissent written by Oliver Wendell Holmes, a thrice-injured Civil War veteran, the marketplace has been described as a space where competition …

Breaking The Rules, Rima Sirota

Georgetown Law Faculty Publications and Other Works

“Breaking the Rules” is a legal research and writing assignment that I crafted for students completing their first year of law school. The assignment honors new students’ desire for skills that will allow them to effectively challenge the status quo of settled but discriminatory legal rules. Part I of this article is an essay that contextualizes and explains the assignment; Part II provides the assignment itself.

The Trade Origins Of Privacy Law, Anupam Chander

Georgetown Law Faculty Publications and Other Works

The desire for trade propelled the growth of data privacy law across the world. Countries with strong privacy laws sought to ensure that their citizens’ privacy would not be compromised when their data traveled to other countries. Even before this vaunted Brussels Effect pushed privacy law across the world through the enticement of trade with the European Union, Brussels had to erect privacy law within the Union itself. And as the Union itself expanded, privacy law was a critical condition for accession.

But this coupling of privacy and trade leaves a puzzle: how did the U.S. avoid a comprehensive privacy …

Mandatory Anti-Bias Cle: A Serious Problem Deserves More Meaningful Response, Rima Sirota

Georgetown Law Faculty Publications and Other Works

This essay addresses the problematic convergence of two recent trends: (1) the expansion of jurisdictions requiring anti-bias training (ABT) as part of mandatory continuing legal education (CLE), and (2) the growing recognition among social scientists that such training, at least as currently practiced, is of limited effectiveness.

Forty-six American states require continuing legal education (CLE), and eleven of these states now require lawyer ABT as one facet of CLE requirements. I have previously criticized the mandatory CLE system because so little evidence supports the conclusion that it results in more competent lawyers. The central question tackled by this essay is …

Fears, Faith, And Facts In Environmental Law, William W. Buzbee

Georgetown Law Faculty Publications and Other Works

Environmental law has long been shaped by both the particular nature of environmental harms and by the actors and institutions that cause such harms or can address them. This nation’s environmental statutes remain far from perfect, and a comprehensive law tailored to the challenges of climate change is still elusive. Nonetheless, America’s environmental laws provide lofty, express protective purposes and findings about reasons for their enactment. They also clearly state health and environmental goals, provide tailored criteria for action, and utilize procedures and diverse regulatory tools that reflect nuanced choices.

But the news is far from good. Despite the ambitious …

Cultural Property: “Progressive Property In Action”, J. Peter Byrne

Georgetown Law Faculty Publications and Other Works

Cultural property law fulfills many of the normative and jurisprudential goals of progressive property theory. Cultural property limits the normal prerogatives of owners in order to give legal substance to the interests of the public or of specially protected non-owners. It recognizes that preservation of and access to heritage resources advance public values such as cultural enrichment and community identity. The proliferation of cultural property laws and their acceptance by courts has occurred despite a resurgent property fundamentalism embraced by the Supreme Court. Thus, this Article seeks to explicate the category of cultural property, its fulfillment of progressive theory, and …

Updating Senator Borah: A Nuclear Kellogg-Briand Pact, David A. Koplow

Georgetown Law Faculty Publications and Other Works

In recognizing the legacy of Senator William E. Borah, the author shares his remarks from the Borah Symposium at the University of Idaho, about the Senator's personality and character, his contribution and later characterization to international law and national security, specifically the 1928 Kellogg-Briand Pact, and finally, a proposal to a modern reincarnation to the Kellogg-Briand Pact and the newer threats of this era.

Blinded By The Light: Resolving The Conflict Between Satellite Megaconstellations And Astronomy, David A. Koplow

Georgetown Law Faculty Publications and Other Works

The sudden emergence of large constellations of small satellites in low altitude orbits represents one of the most dramatic contemporary innovations in outer space. Promising low-cost, low-latency global communications and spectacular capacities for remote sensing of the Earth, these satellites will soon number in the tens of thousands, sponsored by diverse corporations and countries around the world. But this proliferation of spacecraft comes at a steep cost in unavoidable interference with ground-based astronomy: as the satellites overfly the observatories, they block the views of remote objects and phenomena, leaving obliterating white streaks on the collected imagery, and obscuring access to …

Large Constellations Of Small Satellites: The Good, The Bad, The Ugly, And The Illegal, David A. Koplow

Georgetown Law Faculty Publications and Other Works

The most exciting and far-reaching contemporary developments regarding human activities in outer space arise from the recent drastic reductions in the costs of building, launching, and operating satellites, and from the concomitant sudden emergence of large constellations of small, inexpensive, privately-owned spacecraft. These satellites--devoted to highly remunerative functions such as communications (bringing high-speed, affordable internet to underserved constituencies), remote sensing (facilitating land use planning, weather forecasting, and emergency search and rescue), and support for military operations (in Ukraine and elsewhere)--already number in the thousands and will soon reach the tens of thousands.

But in addition to generating billions of …

Micro International Law, Katrin Kuhlmann

Georgetown Law Faculty Publications and Other Works

International law has long been viewed as the domain of countries and capitals, not fields or factories, but this overly top-down perspective misses a critical and under-studied dimension. Underneath the macro level of international agreements and standardized legal approaches and norms, international law is much more nuanced, with multiple sources of influence, production, design, adoption, and decision-making, which need to be more systemically recognized and compared in both scholarship and practice. Models stemming from legal systems in less powerful states, smaller-scale stakeholder interests, and local solutions are often treated as one-off anecdotes or isolated case studies without broader implications. Cataloging …

Towards An Effective Merger Review Policy: A Defence Of Rebuttable Structural Presumptions, Filippo Lancieri, Tommaso Valletti

Georgetown Law Faculty Publications and Other Works

We discuss the design of an effective merger review policy for the 21st century. We argue that the practice of the past decades is inadequate and propose a move towards much stronger rebuttable structural presumptions. These presumptions establish that all mergers above certain thresholds are illegal unless the merging parties can prove that merger-specific efficiencies will be shared with consumers and yield tangible welfare gains. These presumptions are grounded on solid economics and also acknowledge the real-world limitations in enforcement resources and information asymmetries between companies and regulators. We outline how to establish such presumptions in practice, defending the implementation …

The (Still) Unexplored Possibilities Of A Poetics Of Law, Naomi Mezey

Georgetown Law Faculty Publications and Other Works

In this contribution to the symposium celebrating the Fiftieth Anniversary of James Boyd White’s The Legal Imagination, I have accepted White’s invitation in the last chapter of his magisterial book to think about poems and judicial opinions as compatible acts of imagination and meaning making. White asks brilliant questions, and his book is full of them, each a nugget of insight and also a prod that asks the reader to think harder, think deeper, revisit her first thoughts, to perhaps change her mind, and above all, with guidance, to educate herself. In this chapter of the book, White is …

The Taylor Swift Effect And International Law, Katrin Kuhlmann

Georgetown Law Faculty Publications and Other Works

Taylor Swift’s Eras Tour has come to an end, but the Taylor Swift Effect will remain a powerful force with influence well beyond even Swift herself. Often used to describe Swift’s economic impact through her fandom, it has become shorthand for the broader network effect that amplifies and extends the reach of her discography and cultural influence. As this article discusses, the Taylor Swift Effect has real implications for international relations and international law at a time when many nations are withdrawing from constructive international engagement, with devastating consequences in terms of global rights, liberties, and norms.

This article explores …

Investigating The Role And Mechanism Of Host Cell Death In Porcine Reproductive And Respiratory Virus Infection, Michelle Steyn

Electronic Theses and Dissertations

No abstract provided.

I Can't Look Away: Parasocial Relationships With Dance Mom Characters Across Tv And Social Media, Kennedy Kay Pirlet

Electronic Theses and Dissertations

In 2019, Dance Moms ended its airing on Lifetime at the completion of the eighth season. However, the show and its cast members remained popular on social media platforms like TikTok, but we still didn’t know the relationship between watching the show and following cast members on multiple social media platforms or who audiences were closest to. To answer this question, the celebrity-persona parasocial interaction scale and experience of parasocial interaction scale were utilized. These scales were used in this study and found reliable. Snowball recruitment focusing on social media platforms and emails yielded 180 eligible sample participants. Through a …

Portable X-Ray Fluorescence Spectrometry For Sensing Salinity And Sodicity In Glacial Northern Great Plains Soils With Machine Learning Models, Adam Devlin

Electronic Theses and Dissertations

Saline and sodic soils are an increasing concern across the Northern Great Plains (NGP) due to factors of climate change and land management that are drawing geologically derived salts to the land surface. Traditional laboratory assessments, such as electrical conductivity (EC) and sodium adsorption ratio (SAR), are time and resource consumptive. Portable X-ray fluorescence (PXRF) may be a viable proximal sensing alternative, as it is able to provide elemental data in minutes, in situ or ex situ, and can directly quantify salinity-associated elements like Ca, Mg, and S. PXRF paired with predictive models has proven useful for a range of …

Organizational Culture's Impact On Job Satisfaction: A Reconceptualization Of The Competing Values Framework, Isaac Thor Erickson

Electronic Theses and Dissertations

Academic job satisfaction has been decreasing in the U.S. which has profound negative impacts such as burnout and decreased well-being of employees. One way that job satisfaction can be increased is through understanding and changing organizational cultures through better communication. The Competing Values Framework (CVF; Quinn & Rohrbaugh, 1983; Belasen & Frank, 2010; Lund, 2003) has been used to understand how organizational cultures and their communicative norms relate to job satisfaction. However, the CVF relies on categorical measures sitting on two axes that are not orthogonal. As such, the study posits breaking these two axes into four dimensions of organizational …

The Spatial Ecology Of Plains Spotted Skunks In South Dakota: Insights From Species Distribution, Resource Selection, And Co-Occurrence Models, Kara M. White

Electronic Theses and Dissertations

The plains spotted skunk (Spilogale interrupta) is a data-deficient small carnivore native to the central plains of North America that has experienced significant population declines. My dissertation investigates the species’ distribution, habitat associations, and interspecific interactions in South Dakota, providing crucial information for conservation actions. In Chapter 1, I developed ensemble distribution models on a broad scale, incorporating species location data from 1985–2020, environmental factors, and six predictive modeling algorithms. I identified key predictors including mean temperature diurnal range and proportion of area as pasture, and estimated ~31,300 km2 of potential habitat, predominately in eastern South Dakota. In Chapter 2, …

Advancing Karl Jaspers: The Connection Between The Theory Of Existential Communication And Mentoring Satisfaction, Nolan Patrick Bowers

Electronic Theses and Dissertations

Existential philosopher Karl Jaspers’s theory (1932/1970; 1935/1971b) of existential communication is understood to be his most important contribution to existentialism. Additionally, this theory has unique ties to the phenomena of communication, begging its use as a dialogic theory. However, Jaspers’s theory has been relatively untouched by academia. This thesis understands the theory of existential communication through an operationalization of its aspects and explicitly connecting them to communicative behaviors. These aspects of existential communication are (1) vulnerability, (2) open-mindedness, and (3) equality. This study set out to determine whether these aspects could be found within mentoring relationships and support the aspects …

Longevity In Afrikaner Cattle: A Survival Analysis, Allison M. Bot Steffl

Electronic Theses and Dissertations

The Afrikaner breed of cattle is indigenous to South Africa and due to their hardiness was once the most popular breed amongst farmers. The objectives for this study were to: (1) estimate environmental effects (age at first calving, season) and (2) genetic variance affecting longevity in Afrikaner cattle using survival analysis and a Weibull model and (3) evaluate the effect of the Infusion Project on longevity utilizing a Cox model. For the first objective, age at first calving impacted longevity as younger age at first calving was associated with decreased longevity. Season of birth and year of birth also impacted …

Assessing The Performance And Cost Effectiveness Of Rainwater Harvesting For High Tunnel Production Across Climates In The Continental United States, Mustafa Aydogdu

Electronic Theses and Dissertations

Several factors such as global climate change, population growth, urban and agricultural expansion, rising water demand, unequal water distribution, hydro-political conditions, declining water quality, rainwater scarcity, and temperature-induced drought contribute to water resource degradation. Rainwater harvesting (RWH) emerges as a sustainable solution, involving the collection and storage of rainwater for agriculture, livestock, and domestic use. RWH reduces reliance on municipal water, mitigates climate change impacts, and decreases runoff. Conventional RWH systems in the US vary in effectiveness. Increasing storage and water use enhances RWH effectiveness, improving stormwater runoff and reducing potable water use. High tunnel production of vegetable crops has …