Digital Commons Network^™

Constrained Reinforcement Learning In Hard Exploration Problems, Pankayaraj Pathmanathan, Pradeep Varakantham

Research Collection School Of Computing and Information Systems

One approach to guaranteeing safety in Reinforcement Learning is through cost constraints that are imposed on trajectories. Recent works in constrained RL have developed methods that ensure constraints can be enforced even at learning time while maximizing the overall value of the policy. Unfortunately, as demonstrated in our experimental results, such approaches do not perform well on complex multi-level tasks, with longer episode lengths or sparse rewards. To that end, wepropose a scalable hierarchical approach for constrained RL problems that employs backward cost value functions in the context of task hierarchy and a novel intrinsic reward function in lower levels …

Future Aware Pricing And Matching For Sustainable On-Demand Ride Pooling, Xianjie Zhang, Pradeep Varakantham, Hao Jiang

Research Collection School Of Computing and Information Systems

The popularity of on-demand ride pooling is owing to the benefits offered to customers (lower prices), taxi drivers (higher revenue), environment (lower carbon footprint due to fewer vehicles) and aggregation companies like Uber (higher revenue). To achieve these benefits, two key interlinked challenges have to be solved effectively: (a) pricing – setting prices to customer requests for taxis; and (b) matching – assignment of customers (that accepted the prices) to taxis/cars. Traditionally, both these challenges have been studied individually and using myopic approaches (considering only current requests), without considering the impact of current matching on addressing future requests. In this …

Bidding Graph Games With Partially-Observable Budgets, Guy Avni, Ismael Jecker, Dorde Zikelic

Research Collection School Of Computing and Information Systems

Two-player zero-sum graph games are a central model, which proceeds as follows. A token is placed on a vertex of a graph, and the two players move it to produce an infinite play, which determines the winner or payoff of the game. Traditionally, the players alternate turns in moving the token. In bidding games, however, the players have budgets and in each turn, an auction (bidding) determines which player moves the token. So far, bidding games have only been studied as fullinformation games. In this work we initiate the study of partial-information bidding games: we study bidding games in which …

Learning Control Policies For Stochastic Systems With Reach-Avoid Guarantees, Dorde Zikelic, Mathias Lechner, A. Thomas Henzinger, Krishnendu Chatterjee

Research Collection School Of Computing and Information Systems

We study the problem of learning controllers for discrete-time non-linear stochastic dynamical systems with formal reach-avoid guarantees. This work presents the first method for providing formal reach-avoid guarantees, which combine and generalize stability and safety guarantees, with a tolerable probability threshold p ∈ [0,1] over the infinite time horizon in general Lipschitz continuous systems. Our method leverages advances in machine learning literature and it represents formal certificates as neural networks. In particular, we learn a certificate in the form of a reach-avoid supermartingale (RASM), a novel notion that we introduce in this work. Our RASMs provide reachability and avoidance guarantees …

An Enhanced Cloud-Native Deep Learning Pipeline For The Classification Of Network Traffic, Ahmed Sobhy Elkenawy

Theses and Dissertations

In a rapidly changing world, the way of solving real-world problems has changed to leverage the power of the advancements in multiple fields. Cloud-native computing approaches can be utilized with deep learning techniques to provide solutions in several important areas. For instance, with the emergence of the pandemic, much dependence on modern technologies came out as a replacement for face-to-face interaction. Deep learning can reach a high level of accuracy, which makes it very effective in the support of modern services and technologies. However, there are some challenging issues because deep learning requires many large-scale experiments, which demand a lot …

Utilizing Design Thinking To Enhance Wellbeing In Interdisciplinary Courses: A Positive Social Psychology Approach, Areej Elsayary

All Works

Design thinking is considered to be a positive social psychology intervention. Students who practice using the design thinking process during their coursework will most likely solve personal problems that improve their well-being. This study investigates the impact of using the design thinking process in interdisciplinary courses to enhance students' well-being through developing mindsets that enable them to solve their problems and set personal goals unconsciously. A modified PERMA-PH model is used to guide this study. The PERMA included Positive Emotions, Negative Emotions, Engagement, Relationship, Meaning and Purpose, and Accomplishments, the "PH" (future plans and health) was added to the PE …

Engineering A Microbiosphere To Clean Up The Ocean – Inspiration From The Plastisphere, Khulood A. Alnahdi, Laila W. Alali, Mezna K. Suwaidan, M. Kalim Akhtar

All Works

Plastic is a ubiquitous material that has become an essential part of our lives. More than one hundred million tons of plastic has accumulated in the world’s oceans as a result of poor waste management. This plastic waste gradually fragments into smaller pieces known as microplastics and nanoplastics. These small plastic particles can cause significant damage to marine ecosystems, and negatively impact human health. According to a recent review of international patents, the majority of ocean-cleaning inventions are limited to microplastics larger than 20 μm. Furthermore, such technologies are ineffective for nanoplastics, which measure less than 1000 nm, or even …

Carla+: An Evolution Of The Carla Simulator For Complex Environment Using A Probabilistic Graphical Model, Sumbal Malik, Manzoor Ahmed Khan, Aadam, Hesham El-Sayed, Farkhund Iqbal, Jalal Khan, Obaid Ullah

All Works

In an urban and uncontrolled environment, the presence of mixed traffic of autonomous vehicles, classical vehicles, vulnerable road users, e.g., pedestrians, and unprecedented dynamic events makes it challenging for the classical autonomous vehicle to navigate the traffic safely. Therefore, the realization of collaborative autonomous driving has the potential to improve road safety and traffic efficiency. However, an obvious challenge in this regard is how to define, model, and simulate the environment that captures the dynamics of a complex and urban environment. Therefore, in this research, we first define the dynamics of the envisioned environment, where we capture the dynamics relevant …

Independent Analysis And Interpretation Of The New Mexico Constitution: If Not Now, When?, The Honorable Linda M. Vanzi, Mark T. Baker

New Mexico Law Review

This article posits that the mode of analysis of state constitutional issues adopted by the New Mexico Supreme Court in State v. Gomez, as it has been applied in the civil context, has neither “promote[d] the development of a sound body of state constitutional jurisprudence” nor led to “consistent, predictable, and reasonable state court decision-making,” as some envisioned in 1998. Instead, it has often led to essentially automatic deference to federal precedent interpreting comparable provisions of the Federal Constitution and very limited, if any, consideration of protections afforded under our state constitution. In addition, the inconsistent application of the Gomez …

Negligent Commercial Transactions: Does New Mexico Face A Slippery Slope After Morris?, Annika Cleveland

New Mexico Law Review

In its July 2021 decision, Morris v. Giant Four Corners, the New Mexico Supreme Court held that the doctrine of negligent entrustment includes liability for someone who supplies gasoline to a person they knew or should have known was intoxicated. While the Morris court’s decision is novel in New Mexico, courts will likely interpret the inclusion narrowly, restricting the duty to circumstances where a commercial transaction enabled a DWI. By reviewing the decisions of other jurisdictions to include certain commercial transactions under negligent entrustment claims and the impact those decisions had on subsequent litigation, this article argues that Morris will …

Enhanced Two-Step Deep-Learning Approach For Electromagnetic-Inverse-Scattering Problems: Frequency Extrapolation And Scatterer Reconstruction, Huan Huan Zhang, He Ming Yao, Lijun Jiang, Michael Ng

Electrical and Computer Engineering Faculty Research & Creative Works

The electromagnetic-inverse-scattering (EMIS) problem is solved by a novel two-step deep-learning (DL) approach in this article. The newly proposed two-step DL approach not only predicts the multifrequency EM scattered field, but also overcomes the limitation of the conventional methods for solving EMIS problems, such as expensive computational cost, strong ill-conditions, and invalidity on high contrast. In the first step, the complex-valued deep residual convolutional neural network (DRCNN) is utilized to predict multifrequency EM scattered fields only using single-frequency EM scattered field information. Based on a new complex-valued deep convolutional encoder-decoder (DCED) structure, the second step utilizes the obtained multifrequency EM …

The Effect Of An American Heart Association–Approved Exercise Regimen On Burnout In Nurse Practitioners And Physician Assistants Working In Emergency Departments, Michelle Lee Johnson

Electronic Theses and Dissertations

Burnout is a widely known state of physical and emotional fatigue previously noted to affect as many as 60% of healthcare providers, but one that is understudied in nurse practitioners and physician assistants working in emergency departments. It is imperative that the providers of healthcare recognize in themselves signs of burnout and have resources available to mitigate the condition. A pretest–posttest, quasi-experimental, nonequivalent control group, descriptive research design with descriptive statistics analysis was used to analyze answers to an email-based survey sent to nurse practitioners and physician assistants working for one large emergency medicine staffing company. The intent of this …

Mindfulness Based Stress Reduction Techniques In Chronic Illness, Anna Celia Gil

Electronic Theses and Dissertations

Abstract

Chronic stress and its effect on both physical and mental health have been a topic of increasing interest in the past several decades. There is mounting evidence that recurrent, persistent stress of both a physiologic and psychological nature leads to a dysfunction in the hypothalamic pituitary axis (HPA), the system which helps the body recover and adapt to short term stress. In long term stress, this HPA dysfunction leads to impairment of the immune and neuroendocrine systems resulting in chronic low-grade inflammation. This type of chronic inflammation acts as a precursor to several chronic illnesses such as diabetes, hypertension, …

Female Ex-Offenders Transitioning Into Society, Stacey L. Forte

Electronic Theses and Dissertations

The purpose of this qualitative study was to examine female ex-offenders’ perceptions of their lived experience(s) while transitioning into society after incarceration. This study examined risk factors that female ex-offenders faced while transitioning into society asking the question, “What are the lived experiences of female ex-offenders who utilized transitional housing for reentry with regard to their perception of the benefits of certain services/offerings and staff support?” Nine participants were part of the study ranging from 25–64 years of age, with the majority being between the ages of 25 and 55 years old, residing originally in five different states. Sixty percent …

World Transit Research February 2023 Newsletter, Institute Of Transport Studies Monash University

World Transit Research Newsletter

No abstract provided.

Gamesmanship In Modern Discovery Tech, Neel Guha, Peter Henderson, Diego A. Zambrano

Faculty Scholarship

This chapter explores the potential for gamesmanship in technology-assisted discovery. Attorneys have long embraced gamesmanship strategies in analog discovery, producing reams of irrelevant documents, delaying depositions, or interpreting requests in a hyper-technical manner. The new question, however, is whether machine learning technologies can transform gaming strategies. By now it is well known that technologies have reinvented the practice of civil litigation and, specifically, the extensive search for relevant documents in complex cases. Many sophisticated litigants use machine learning algorithms – under the umbrella of “Technology Assisted Review” (TAR) – to simplify the identification and production of relevant documents in discovery. …

Challenging Racism As A Black Police Officer: An Emergent Theory Of Employee Anti-Racism, Melanie K. Prengler, Nitya Chawla, Angelica Leigh, Kristie M. Rogers

Management Faculty Research and Publications

Organizations are key mechanisms by which racism is enacted and perpetuated. Although much of the management literature has focused on organizational efforts to combat racial discrimination, some of the most transformative changes come from the everyday actions of employees themselves. In this study, we develop grounded theory on racial minority employees who choose to challenge racism from within the organizational structures that perpetuate it most (i.e., highly racialized organizations). We present a theoretical model of employee anti-racism that emerged from our analysis of qualitative data—comprising 80.7 audio hours from 48 interviews with Black law enforcement officers. This model articulates anti-racism …

Policing & The Problem Of Physical Restraint, Steven Arrigg Koh

Faculty Scholarship

The Fourth Amendment of the U.S. Constitution prohibits unreasonable “seizures” and thus renders unlawful police use of excessive force. On one hand, this definition is expansive. In the U.S. Supreme Court’s 2021 Term, in Torres v. Madrid, the Court clarified that a “seizure” includes any police application of physical force to the body with intent to restrain. Crucially, Chief Justice Roberts’ majority opinion emphasized that police may seize even when merely laying “the end of a finger” on a layperson’s body. And yet, the Supreme Court’s Fourth Amendment totality-of-the-circumstances reasonableness balancing test is notoriously imprecise—a “factbound morass,” in the famous …

Quantum Copyright Law: Schrodinger's Cat, Banksy's Shredder, And Art On The Edge, Richard H. Chused

Articles & Chapters

An object has been assembled by artists I know that presents a fascinating set of conundrums about the relationships between quantum physics, shredders, random surprises, the value of art, and copyright law. Seems fantastical, right? And so it is. The object of concern is a metal box a little under four feet tall, about eighteen inches deep, and a bit less than three feet wide. The box is welded together along all twelve of its edges. It has an opening across one side. And there is a small control panel on top. Before the box was welded shut, a set …

Do We Need Patient-Specific Qa For Adaptively Generated Plans? Retrospective Evaluation Of Delivered Online Adaptive Treatment Plans On Varian Ethos, Xiaodong Zhao, Dennis N Stanley, Carlos E Cardenas, Joseph Harms, Richard A Popple

2020-Current year OA Pubs

BACKGROUND: The clinical introduction of dedicated treatment units for online adaptive radiation therapy (OART) has led to widespread adoption of daily adaptive radiotherapy. OART allows for rapid generation of treatment plans using daily patient anatomy, potentially leading to reduction of treatment margins and increased normal tissue sparing. However, the OART workflow does not allow for measurement of patient-specific quality assurance (PSQA) during treatment delivery sessions and instead relies on secondary dose calculations for verification of adapted plans. It remains unknown if independent dose verification is a sufficient surrogate for PSQA measurements.

PURPOSE: To evaluate the plan quality of previously treated …

A Corpus-Driven Comparative Analysis Of Verb Phrase Based Bundles In L2 Malaysian Polytechnic Learners’ Writing, Subramaniam Radika

Student Works (2020-2029)

This study aims to explore the similarities and differences in the use of verb phrase-based (VP-based) bundles in the writing of L2 Malaysian Engineering learners via the Malaysian Polytechnic Electronic Engineering Learner Corpus (MyPolyEELC) in comparison to their native counterparts in the British Academic Written English (BAWE) sub-corpus and experts in the Electrical and Electronic Engineering Research Articles Corpus (3ERAC). The MyPolyEELC which consists of 891,919 words is developed from 231 Final Year Project reports written by Electronic Engineering Diploma learners from 14 Malaysian polytechnics. The 374,383-word BAWE sub-corpus is compiled from the existing BAWE corpus by selecting texts written …

Effective Farm Management Promotes Native Amf And Benefit Organic Farming Systems, Pushpa Soti, Rupesh R. Kariyat, Alexis Racelis

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Highlights

• Agricultural practices have significant influence on the AMF community dynamics.

• Soil nutrients regulate AMF spore abundance and diversity.

• Using grass cover crops can promote native AMF in farms.

Abstract

Using soil inoculants containing naturally occurring beneficial microorganisms has become a popular practice in sustainable agriculture. However, an understanding of the environmental variables that affect plant-microbe interactions and the benefit of using commercial inoculum is relatively sparse. To address this, we examined the efficiency of three different methods to inoculate AMF (Arbuscular Mycorrhizal Fungi) in organic vegetable farms in south Texas: cover cropping, application of farm-produced (indigenous) AMF inoculum, …

Coloring Complexes And Combinatorial Hopf Monoids, Jacob A. White

School of Mathematical & Statistical Sciences Faculty Publications

We generalize the notion of a coloring complex of a graph to linearized combinatorial Hopf monoids. We determine when a linearized combinatorial Hopf monoid has such a construction, and discover some inequalities that are satisfied by the quasisymmetric function invariants associated to the combinatorial Hopf monoid. We show that the collection of all such coloring complexes forms a linearized combinatorial Hopf monoid, which is the terminal object in the category of combinatorial Hopf monoids with convex characters. We also study several examples of combinatorial Hopf monoids.

Patient-Mediated Interventions In Hospital: A Systematic Review, Georgia Tobiano, Shelley Roberts, Rachel Muir, Teresa Jerofke-Owen, Christine Ting, Sarah Thorning, Daren K. Heyland, Andrea P. Marshall

College of Nursing Faculty Research and Publications

Aims

To describe the characteristics of hospital-based, patient-mediated interventions and their impact on patient, clinician and organization outcomes.

Design

Systematic review.

Data Sources

Health literature databases (MEDLINE, CINAHL and EMBASE) were searched in August 2021. Backward and forward citation searching was conducted.

Review Methods

Studies investigating patient-mediated interventions, targeted at adult hospitalized patients were eligible. Data were extracted related to study and intervention characteristics. Narrative synthesis was used to understand intervention impact on patient, clinician and organization outcomes (as per a framework). Methodological quality was assessed using the Mixed Methods Assessment Tool.

Results

Thirty-three studies, reporting 18 interventions, were included. …

The Bg News February 1, 2023, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. February 01, 2023. Volume 102-Issue 16.

The Disembodied First Amendment, Nathan Cortez, William M. Sage

Faculty Scholarship

First Amendment doctrine is becoming disembodied—increasingly detached from human speakers and listeners. Corporations claim that their speech rights limit government regulation of everything from product labeling to marketing to ordinary business licensing. Courts extend protections to commercial speech that ordinarily extended only to core political and religious speech. And now, we are told, automated information generated for cryptocurrencies, robocalling, and social media bots are also protected speech under the Constitution. Where does it end? It begins, no doubt, with corporate and commercial speech. We show, however, that heightened protection for corporate and commercial speech is built on several “artifices” - …

Potassium Fertilizer Rate Recommendations: Does Accounting For Soil Stock Of Potassium Matter?, Kimberly B. Oliver, Michael P. Popp, Di Fang, John D. Anderson, Nathan A. Slaton, Gerson L. Drescher, Trenton L. Roberts, Jada Thompson

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Profitability, yield, and fertilizer use are compared across three different potassium (K) fertilizer rate recommendation ideologies. Existing agronomic, “build and maintain” rate recommendations (KE) are compared to profit-maximizing rates with and without taking long-run soil-test K (STK) implications into account. Regardless of starting STK, K use equilibrated over the course of 3 years irrespective of ideology. Since taking long-run STK into account did not alter ending STK and only led to a miniscule yield effect, we encourage producers to use annual profit-maximizing K rates that were 3–11% lower than KE rates and generated more profit with minimal yield loss.

Defining Twice Exceptional Learners: A Study Of Self-Concept, Alyssa D. Landau

Dissertations, Theses, and Capstone Projects

In 2014, the first operational definition of twice exceptional (2e) learners was published in Gifted Child Quarterly to provide a clear and identifiable profile of the population (Reis, Baum, & Burke, 2014). The article defines 2e learners as, “students who demonstrate the potential for high achievement or creative productivity in one or more domains such as math, science, technology, the social arts, the visual, spatial, or performing arts or other areas of human productivity AND who manifest one or more disabilities as defined by federal or state eligibility criteria” (Reis et al., 2014, p. 222-223). Publishing an operational definition of …

Resource Management In Mobile Edge Computing For Compute-Intensive Application, Xiaojie Zhang

Dissertations, Theses, and Capstone Projects

With current and future mobile applications (e.g., healthcare, connected vehicles, and smart grids) becoming increasingly compute-intensive for many mission-critical use cases, the energy and computing capacities of embedded mobile devices are proving to be insufficient to handle all in-device computation. To address the energy and computing shortages of mobile devices, mobile edge computing (MEC) has emerged as a major distributed computing paradigm. Compared to traditional cloud-based computing, MEC integrates network control, distributed computing, and storage to customizable, fast, reliable, and secure edge services that are closer to the user and data sites. However, the diversity of applications and a variety …

Examining Factors Related To Tobacco Treatment Engagement Among Tobacco Dependent Black/African American; Hispanic/Latino Cancer Patients: An Analysis Of Memorial Sloan Kettering Cancer Center’S Tobacco Treatment Program, Gleneara E. Bates-Pappas

Dissertations, Theses, and Capstone Projects

Among patients diagnosed with cancer, persistent tobacco use is associated with adverse clinical outcomes such as worse treatment side effects, decreased effectiveness of cancer treatment (chemotherapy, radiotherapy, and surgery), all increasing risk of recurrence, second primary cancers, and poor survival. Despite the clinical importance of tobacco cessation in the context of high quality cancer care, engaging Black/African American and Hispanic/Latino cancer patients in tobacco treatment programs can be challenging. Prior studies with the general adult population demonstrate that Black/African American and Hispanic/Latino smokers are referred to and accept tobacco cessation treatment at lower rates compared to non-Hispanic White smokers. This …