Digital Commons Network^™

A New Flexible Bathtub-Shaped Modification Of The Weibull Model: Properties And Applications, Qinghu Liao, Zubair Ahmad, Eisa Mahmoudi, Gholamhossein Hamedani

Mathematical and Statistical Science Faculty Research and Publications

Many studies have suggested the modifications and generalizations of the Weibull distribution to model the nonmonotone hazards. In this paper, we combine the logarithms of two cumulative hazard rate functions and propose a new modified form of the Weibull distribution. The newly proposed distribution may be called a new flexible extended Weibull distribution. Corresponding hazard rate function of the proposed distribution shows flexible (monotone and nonmonotone) shapes. Three different characterizations along with some mathematical properties are provided. We also consider the maximum likelihood estimation procedure to estimate the model parameters. For the illustrative purposes, two real applications from reliability engineering …

Should I Stay Or Should I Go: Student Housing, Remote Instruction, Campus Policies And Covid-19, Patricia E. Salkin, Pamela Ko

Scholarly Works

In March 2020, as the world scrambled to understand and address myriad public health and economic challenges unfolding from the novel coronavirus labeled COVID-19, higher education was forced into a tailspin. This article examines the legal and policy challenges that result from, among other issues, the congregate housing situations existing for on- and off-campus housing at colleges and universities. The legal issues demonstrate federalism at work and include; at the federal level, regulations and guidance from the White House, the Center for Disease Control (CDC) and the U.S. Department of Education; at the State level from gubernatorial executive orders, state …

Marshall-Olkin Power Lomax Distribution: Properties And Estimation Based On Complete And Censored Samples, Muhammad Ahsan Ul Haq, Gholamhossein Hamedani, M. Elgarhy, Pedro Luiz Ramos

Mathematical and Statistical Science Faculty Research and Publications

We study a new distribution called the Marshall-Olkin Power Lomax distribution. A comprehensive account of its mathematical properties including explicit expressions for the ordinary moments, moment generating function, order statistics, Renyi entropy, and probability weighted moments are derived. The model parameters are estimated by the method of maximum likelihood. Monte Carlo simulation study is carried out to estimate the parameters and the performance of the estimates is judged via the average biases and mean squared error values. The usefulness of the proposed model is illustrated via real-life data set.

Characterizations Of The New Poisson-Weighted Exponential And The Exponentiated Weibull-Geometric Discrete Distributions, Gholamhossein Hamedani

Mathematical and Statistical Science Faculty Research and Publications

Certain characterizations of the new Poisson-weighted exponentiated and the exponentiated Weibull-geometric discrete distributions introduced by Altun(2019) and by Famoye(2019), respectively, are presented here with the intention of completing, in some way, their works.

Municipal Power And Democratic Legitimacy In The Time Of Covid-19, Alexandra Flynn

All Faculty Publications

As COVID-19 swept through Canada, cities were at the front lines in curbing its spread. From March 2020, municipalities introduced such measures as restricting park access, ticketing those lingering in public places, and enforcing physical distancing requirements. Local governments have also supplemented housing for the vulnerable and given support to local “main street” businesses. Citizens expected their local governments to respond to the pandemic, but few people know how constrained the powers of municipalities are in Canadian law. Municipalities are a curious legal construct in Canadian federalism. Under the constitution, they are considered to be nothing more than “creatures of …

Domino Steganography, Robert Bosch, Aaron Kreiner

Faculty & Staff Scholarship

No abstract provided.

The Patriation Of Canadian Corporate Law, Camden Hutchison

All Faculty Publications

Canadian corporate law belongs within a broader Anglo-American legal tradition, sharing many of the features of other common law jurisdictions, most notably England and the United States. Prior to Confederation, Canadian corporate law first emerged from nineteenth-century English legislation and continued to resemble English law – at least superficially – well into the twentieth century. Legislation is only one source of corporate law, however. Just as important is the creation of legal rules through the common law adjudicatory process. Thus, examining case law raises an important empirical question distinct from, though relevant to, the issue of legislative influence – namely, …

Examining The Complex Relationship Between Innovation And Regulation Through A Survey Of Wastewater Utility Managers, Luke Sherman, Alida Cantor, Anita Milman, Michael Kiparsky

Geography Faculty Publications and Presentations

Despite pressures to increase performance and decrease costs, innovation has been slow to emerge in the municipal wastewater sector. The relationship between regulation and innovation in this sector is a particularly interesting aspect of this conundrum, given the degree to which public utility decision-making is influenced by regulation. Using a national survey, this paper examines US wastewater utility managers’ perceptions of how regulation influences the adoption of new technologies. Recognizing that the relationship between innovation and regulation is complex, we develop the concept of regulation as multifaceted and examine three interrelated aspects of regulation: (1) regulatory requirements, (2) regulators and …

A Digital Archive Of Human Activity In The Mcmurdo Dry Valleys, Antarctica, Adrian Howkins, Stephen M. Chignell, Poppie Gullett, Andrew G. Fountain, Melissa Carrie Brett, Evelin Preciado

Geography Faculty Publications and Presentations

Over the last half century, the McMurdo Dry Valleys (MDV) of East Antarctica have become a globally important site for scientific research and environmental monitoring. Historical data can make important contributions to current research activities and environmental management in Antarctica but tend to be widely scattered and difficult to access. We address this need in the MDV by compiling over 5000 historical photographs, sketches, maps, oral interviews, publications, and other archival resources into an online digital archive. The data have been digitized and georeferenced using a standardized metadata structure, which enables intuitive searches and data discovery via an online interface. …

Evaluating Cmip6 Model Fidelity At Simulating Non-Gaussian Temperature Distribution Tails, Arielle J. Catalano, Paul Loikith, J. David Neelin

Geography Faculty Publications and Presentations

Under global warming, changes in extreme temperatures will manifest in more complex ways in locations where temperature distribution tails deviate from Gaussian. Confidence in global climate model (GCM) projections of temperature extremes and associated impacts therefore relies on the realism of simulated temperature distribution tail behavior under current climate conditions. This study evaluates the ability of the latest state-of-the-art ensemble of GCMs from the Coupled Model Intercomparison Project phase six (CMIP6), to capture historical global surface temperature distribution tail shape in hemispheric winter and summer seasons. Comparisons with a global reanalysis product reveal strong agreement on coherent spatial patterns of …

The Assembly History Of The Nearest S0 Galaxy Ngc 3115 From Its Kinematics Out To Six Half-Light Radii, Arianna Dolfi, Duncan A. Forbes, Warrick J. Couch, Anna Ferre-Mateu, Sabine Bellstedt, Kenji Bekki, Jonathan Diaz, Aaron J. Romanowsky, Jean P. Brodie

Faculty Research, Scholarly, and Creative Activity

Using new and archival data, we study the kinematic properties of the nearest field S0 galaxy, NGC 3115, out to ∼6.5 half-light radii (Re) from its stars (integrated starlight), globular clusters (GCs), and planetary nebulae (PNe). We find evidence of three kinematic regions with an inner transition at ∼0.2 Re from a dispersion-dominated bulge (Vrot/σ < 1) to a fast-rotating disc (Vrot/σ > 1), and then an additional transition from the disc to a slowly rotating spheroid at ∼ 2-2.5Re, as traced by the red GCs and PNe (and possibly by the blue GCs beyond ∼ 5Re). From comparison with simulations, we propose an assembly history in which …

Globular Clusters In Coma Cluster Ultra-Diffuse Galaxies (Udgs): Evidence For Two Types Of Udg?, Duncan A. Forbes, Adebusola Alabi, Aaron J. Romanowsky, Jean P. Brodie, Nobuo Arimoto

Faculty Research, Scholarly, and Creative Activity

Ultra-diffuse galaxies (UDGs) reveal extreme properties. Here, we compile the largest study to date of 85 globular cluster (GC) systems around UDGs in the Coma cluster, using new deep ground-based imaging of the known UDGs and existing imaging from the Hubble Space Telescope of their GC systems. We find that the richness of GC systems in UDGs generally exceeds that found in normal dwarf galaxies of the same stellar mass. These GC-rich UDGs imply haloes more massive than expected from the standard stellar mass–halo mass relation. The presence of such overly massive haloes presents a significant challenge to the latest …

Towards Policy-Aware Edge Computing Architectures, Pratik Baniya, Ardeshir Bastani, Gaurav Bajaj, Clifton Francis, Mahima Agumbe Suresh

Faculty Research, Scholarly, and Creative Activity

Cloud computing offers an economical and elastic means to handle the storage and computation needs of the Internet of Things (IoT). However, storage and retrieval from the cloud could potentially violate policies, especially those pertaining to data privacy. Edge computing as a paradigm is a suitable way to overcome these issues. This poster presents an edge computing architecture that enables policy-aware normalization and filtration of the data that is sent to cloud services to preserve policies. We use a secure and encrypted channel to transmit the data generated by the IoT devices to the dedicated computing units at the edge …

Sacramental Shame In Black Churches: How Racism And Respectability Politics Shape The Experiences Of Black Lgbtq And Same-Gender-Loving Christians, Theresa W. Tobin, Dawne Moon

Philosophy Faculty Research and Publications

No abstract provided.

Imsa 2020 Profile, Office Of College And Academic Counseling

IMSA Profile

Ranked the #1 Public High School in Illinois and #2 in America, the Illinois Mathematics and Science Academy® (IMSA) develops creative, ethical leaders in science, technology, engineering and mathematics. As a teaching and learning laboratory created by the State of Illinois, IMSA enrolls academically talented Illinois students in its tuition-free residential Academy for grades 10-12. Students are challenged with a rigorous curriculum designed to develop them into problem solvers and critical thinkers.

Central Tokyo’S Low Response Rate To The 2015 Population Census And Its Related Factors, Tomoya Hanibuchi, Masakazu Yamauchi

Geography Faculty Publications and Presentations

Recently, there has been an increase in the number of “unreported” cases in the Population Census of Japan caused by nonresponses to the survey. Subsequently, this has led to data reliability challenges. In light of this problem, the factors related to the low response rate of the 2015 Population Census in the central Tokyo area are examined in the present study. An online survey was conducted among individuals residing in the three Special Wards of Tokyo to inquire about their responses (submitted or not submitted) to the previous census. The statistical analyses demonstrated that particularly in central Tokyo, middle-aged (35–49 …

Crossing Boundaries: Steps Toward Measuring Undergraduates' Interdisciplinary Science Understanding, Brie Tripp, Sophia A. Voronoff, Erin Shortlidge

Biology Faculty Publications and Presentations

A desired outcome of education reform efforts is for undergraduates to effectively integrate knowledge across disciplines in order to evaluate and address real-world issues. Yet there are few assessments designed to measure if and how students think interdisciplinarily. Here, a sample of science faculty were surveyed to understand how they currently assess students’ interdisciplinary science understanding. Results indicate that individual writing-intensive activities are the most frequently used assessment type (69%). To understand how writing assignments can accurately assess students’ ability to think interdisciplinarily, we used a preexisting rubric, designed to measure social science students’ interdisciplinary understanding, to assess writing assignments …

Pedagogy And Policy: A Tribute To Karen Rothenberg’S Contributions To Health Law, Michael Ulrich

Faculty Scholarship

Professor Karen Rothenberg has had a significant influence on my life, impacting my education, my career, and the way I think. Professor Rothenberg has been a pillar in the health law community, but perhaps her most lasting impact for myself was creating the health law program at the University of Maryland, Francis King Carey School of Law. This nationally recognized program grew from her passion, expertise, and recognition of the importance of health, and is the reason I chose to attend the University of Maryland. The curriculum, faculty, and experience made it one of the best decisions of my life …

A Public Health Law Path For Second Amendment Jurisprudence, Michael Ulrich

Faculty Scholarship

The two landmark gun rights cases, District of Columbia v. Heller and McDonald v. City of Chicago, came down in 2008 and 2010, respectively. In the decade that has followed, two things have become abundantly clear. First, these cases provide little clarity about the nature and scope of Second Amendment rights, resulting in chaos and circuit splits in the lower courts. Second, growing empirical evidence has revealed that, in the background of the debate on individual constitutional rights, a serious gun violence epidemic is intensifying around the country. In one corner, gun rights advocates worry that increased firearm regulation will …

State Handgun Purchase Age Minimums In The Us And Adolescent Suicide Rates: Regression Discontinuity And Difference-In-Differences Analyses, Julia Raifman, Elysia Larson, Colleen L. Barry, Michael Siegel, Michael Ulrich, Anita Knopov, Sandro Galea

Faculty Scholarship

Objective To evaluate the association between US state policies that establish age 18 or 21 years as the minimum purchaser age for the sale of handguns and adolescent suicide rate.

Design Regression discontinuity and difference-in-differences analyses.

Setting 46 US states without policy changes between 2001 and 2017; Missouri and South Carolina, which lowered the age for handgun sales in 2007 and 2008, respectively; and West Virginia and Wyoming, which increased the age for handgun sales in 2010.

Participants Adolescents aged 13 to 20 years(554 461 961 from 2001 to 2017) in the regression discontinuity analysis, and adolescents aged 18 …

Core Criminal Procedure, Steven Arrigg Koh

Faculty Scholarship

Constitutional criminal procedural rights are familiar to contemporary criminal law scholars and practitioners alike. But today, U.S. criminal justice may diverge substantially from its centuries-old framework when all three branches recognize only a core set of inviolable rights, implicitly or explicitly discarding others. This criminal procedural line drawing takes place when the U.S. criminal justice system engages in law enforcement cooperation with foreign criminal justice systems in order to advance criminal cases.

This Article describes the two forms of this criminal procedural line drawing. The first is a “core criminal procedure” approach, rooted in fundamental rights, that arises in the …

Rethinking The Impact Of Third-Party Funding On Access To Civil Justice, Victoria Sahani

Faculty Scholarship

Third-party funding indisputably puts a gold-weighted thumb on the scales of justice in favor of funded parties for two main reasons: (1) funded cases already tend to be calculable winners on the merits, and (2) third-party funders seeking a profit generally do not fund cases that are demonstrably likely to lose on the merits. Thus, we are left with both the promising potential for winners to be more likely to win with third-party funding and the alarming realization that not all winners are offered this same chance. This provokes a larger, fundamental question: If funders are picking winners among the …

From Trulia To Akorn: A Ride On The Roller Coaster Of M&A Litigation, Pierluigi Matera, Ferruccio M. Sbarbaro

Faculty Scholarship

In recent years, M&A litigation has experienced a dramatic increase, culminating with a peak in 2015, when over 96. of publicly announced mergers were challenged in a shareholder lawsuit. A large number of these lawsuits were frivolous and vexatious, since most claims were filed by plaintiffs' attorneys just to extract some fees with little effort. Some abusive practices emerged, signalling an alarming exploitation of the system. One scheme that plaintiffs' attorneys put in place was the disclosure-only settlement. There, the stockholders obtained some modest supplemental disclosures, the plaintiff's attorneys got significant fee awards from the defendant directors and the defendant …

Cyber Mobs, Disinformation, And Death Videos: The Internet As It Is (And As It Should Be), Danielle K. Citron

Faculty Scholarship

Fiction and visual representations can alter our understanding of human experiences and struggles. They help us understand human frailties and suffering in a visceral way. Nick Drnaso’s graphic novel Sabrina does that in spades. In Sabrina, a woman is murdered by a misogynist, and a video of her execution is leaked. Conspiracy theorists deem her murder a hoax. A cyber mob smears the woman’s loved ones as crisis actors, posts death threats, and spreads their personal information. The attacks continue until a shooting massacre redirects the cyber mob’s wrath to other mourners. Sabrina captures the breathtaking velocity of disinformation online …

Is Medicare For All The Answer? Assessing The Health Reform Gestalt As The Aca Turns 10, Nicole Huberfeld

Faculty Scholarship

As presidential candidates debate health reform, the expression “Medicare for All” (“M4A”) is on repeat, yet few appear to understand precisely what Medicare is or what M4A would mean. Even more striking is that Americans are vigorously debating health reform when the ACA – President Obama’s signature legislation and a health reform effort on a scale not seen in decades – turns 10 on March 23.

The ACA pioneered universal coverage, but it also ratcheted up health care complexity by building new scaffolding around an old foundation. This fragmented landscape has been exacerbated by a crazy quilt of implementation crafted …

Third Country Deportation, Sarah R. Sherman-Stokes

Faculty Scholarship

The large-scale deportation of noncitizens from the United States is not new. However, the speed, and secrecy, by which many of these deportations are carried out is unprecedented. Deportations are, increasingly, executed not through a legal court process, but rather, extrajudicially—in detention centers and at border crossings, outside the purview of judges or neutral adjudicators. One kind of this “shadow deportation” is what I term “third country deportation”—the removal of noncitizens to a country other than that designated by an Immigration Judge, after relief to the designated country has been granted, and after the court proceeding has concluded.

This article …

The Internet As A Speech Machine And Other Myths Confounding Section 230 Reform, Danielle K. Citron, Mary Anne Franks

Faculty Scholarship

A robust public debate is currently underway about the responsibility of online platforms. We have long called for this discussion, but only recently has it been seriously taken up by legislators and the public. The debate begins with a basic question: should platforms should be responsible for user-generated content? If so, under what circumstances? What exactly would such responsibility look like? Under consideration is Section 230 of the Communications Decency Act—a provision originally designed to encourage tech companies to clean up “offensive” online content. The public discourse around Section 230, however, is riddled with misconceptions. As an initial matter, many …

The Automated Administrative State: A Crisis Of Legitimacy, Danielle K. Citron, Ryan Calo

Faculty Scholarship

The legitimacy of the administrative state is premised on our faith in agency expertise. Despite their extra-constitutional structure, administrative agencies have been on firm footing for a long time in reverence to their critical role in governing a complex, evolving society. They are delegated enormous power because they respond expertly and nimbly to evolving conditions.

In recent decades, state and federal agencies have embraced a novel mode of operation: automation. Agencies rely more and more on software and algorithms in carrying out their delegated responsibilities. The automated administrative state, however, is demonstrably riddled with concerns. Legal challenges regarding the denial …

The Supreme Court Bar At The Bar Of Patents, Paul Gugliuzza

Faculty Scholarship

Over the past two decades, a few dozen lawyers have come to dominate practice before the U.S. Supreme Court. By many accounts, these elite lawyers—whose clients are often among the largest corporations in the world—have spurred the Court to hear more cases that businesses care about and to decide those cases in favor of their clients. The Supreme Court’s recent case law on antitrust, arbitration, punitive damages, class actions, and more provides copious examples.
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/="/">Though it is often overlooked in discussions of the emergent Supreme Court bar, patent law is another area in which the Court’s agenda has …

Implementation Of A Spine-Centered Care Pathway At A Regional Academic Spine Center., George M Ghobrial, Jefferson Wilson, Daniel Franco, Kristen Vogl, Alexander R Vaccaro, James S Harrop

Department of Neurosurgery Faculty Papers

Study Design: Retrospective case series.

Objective: To describe the early implementation of an inpatient spinal surgery unit and measure the impact on cost and length of stay (LOS).

Methods: A retrospective case review was performed for frequent spine-related diagnosis-related groups (DRGs) cared for by a dedicated multidisciplinary team: combined anterior/posterior (AP) spinal fusion with major complicating or comorbid condition (MCC), combined (AP) spinal fusion with CC, combined (AP) spinal fusion without complicating or comorbid (CC)/MCC, cervical spinal fusion with MCC, cervical spinal fusion with CC, and cervical spinal fusion without CC/MCC. Four time periods were compared: historical control, initial pathway …