Digital Commons Network^™

A Low-Power, Low-Area 10-Bit Sar Adc With Length-Based Capacitive Dac, Zhili Pan

Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research

A 2.5 V single-ended 10-bit successive-approximation-register analog-to-digital converter (SAR ADC) based on the TSMC 65 nm CMOS process is designed with the goal of achieving low power consumption (33.63 pJ/sample) and small area (2874 µm^2 ). It utilizes a novel length-based capacitive digital-to-analog converter (CDAC) layout to achieve low total capacitance for power efficiency, and a custom static asynchronous logic to free the dependence on a high-frequency external clock source. Two test chips have been designed and the problems found through testing the first chip are analyzed. Multiple improved versions of the ADC with minor variations are implemented on the …

Measuring Acoustic Nonlinearity Of Elastic Materials Using Thermal Modulation Of Ultrasonic Waves, Bibo Zhong

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Nonlinear acoustic techniques have been used to determine the nonlinear properties of materials. Existing methods either require complex equipment to measure absolute nonlinear coefficients or can only be used on laboratory-sized specimens. A recently developed thermal modulation method addresses the limitations of existing methods, but further theoretical analysis and validation are required.

In this dissertation, theoretical analyses were first conducted to study the mechanically and thermally induced acoustoelastic effect. Beginning with the wave equation, the relationship of the ultrasonic wave velocity with respect to mechanical strain and the thermal strain was derived in detail. These analyses provided theoretical support for …

Student Perceptions Of Hybrid Courses In Higher Education, Sanne Unger, Carrie Simpson, Alanna L. Lecher, Shara B. Goudreau

Faculty and Staff Publications & Presentations

Online open-ended and closed-ended surveys were conducted in 2014-2016 among 191 students at a small, private university located in South Florida. Our main goals were to evaluate student perceptions of in-class and out-of-class assignments in hybrid courses, determine what students value most about these modes of learning, and recommend ways to maximize advantages and minimize disadvantages of each. We discovered that students value instant feedback and interacting with their peers when they are in class as in-class assignments were rated significantly higher than out-of-class assignments (p < 0.05) and higher ratings were significantly associated with responses associated with student-student interaction (p < 0.05). However, the time and place constraints of in-class work limits their ability to formulate their thoughts. Out-of-class assignments were appreciated for their flexibility of pace, time, and place, although students reported time-management problems as well. Like for in-class work, students valued the opportunity of reading their peers’ answers as higher assignment ratings for out-of-class assignments were significantly associated with students’ ability to read the responses of others. Although participants did not report an effect from specific learning differences, having to write for out-of-class work (as opposed to speaking in class) was reported as a hurdle. We discuss strategies for improving in-class and out-of-class assignments based on our study results.

R2f: A General Retrieval, Reading And Fusion Framework For Document-Level Natural Language Inference, Hao Wang, Yixin Cao, Yangguang Li, Zhen Huang, Kun Wang, Jing Shao

Research Collection School Of Computing and Information Systems

Document-level natural language inference (DocNLI) is a new challenging task in natural language processing, aiming at judging the entailment relationship between a pair of hypothesis and premise documents. Current datasets and baselines largely follow sentence-level settings, but fail to address the issues raised by longer documents. In this paper, we establish a general solution, named Retrieval, Reading and Fusion (R2F) framework, and a new setting, by analyzing the main challenges of DocNLI: interpretability, long-range dependency, and cross-sentence inference. The basic idea of the framework is to simplify document-level task into a set of sentence-level tasks, and improve both performance and …

Differentiated Security Architecture For Secure And Efficient Infotainment Data Communication In Iov Networks, Jiani Fan, Lwin Khin Shar, Jiale Guo, Wenzhuo Yang, Dusit Niyato, Kwok-Yan Lam

Research Collection School Of Computing and Information Systems

This paper aims to provide differentiated security protection for infotainment data commu- nication in Internet-of-Vehicle (IoV) networks. The IoV is a network of vehicles that uses various sensors, software, built-in hardware, and communication technologies to enable information exchange between pedestrians, cars, and urban infrastructure. Negligence on the security of infotainment data commu- nication in IoV networks can unintentionally open an easy access point for social engineering attacks. The attacker can spread false information about traffic conditions, mislead drivers in their directions, and interfere with traffic management. Such attacks can also cause distractions to the driver, which has a potential implication …

Geotemporospatial And Causal Inference Epidemiological Analysis Of Us Survey And Overview Of Cannabis, Cannabidiol And Cannabinoid Genotoxicity In Relation To Congenital Anomalies 2001–2015, Albert Stuart Reece, Gary Kenneth Hulse

Research outputs 2022 to 2026

Background:

Cannabinoids including cannabidiol have recognized genotoxic activities but their significance has not been studied broadly epidemiologically across the teratological spectrum. We examined these issues including contextual space-time relationships and formal causal inferential analysis in USA.

Methods:

State congenital anomaly (CA) rate (CAR) data was taken from the annual reports of the National Birth Defects Prevention Network 2001–2005 to 2011–2015. Substance abuse rates were from the National Survey of Drug Use and Health a nationally representative longitudinal survey of the non-institutionalized US population with 74.1% response rate. Drugs examined were cigarettes, monthly and binge alcohol, monthly cannabis and analgesic and …

Aha! Examining Insight In Exploratory Learning Versus Traditional Instruction., Olivia Kaiser

College of Arts & Sciences Senior Theses

In undergraduate classrooms, students are typically first taught the concepts and procedures for solving problems, then practice. With exploratory learning methods, students explore novel problems and generate original solutions before receiving instruction, which benefits conceptual understanding and future learning. The current study examined whether students who explore before instruction experience greater insight moments, and whether insight leads to better learning. Prior research demonstrates that individuals remember problem solutions better if they experience a sudden moment of solution clarity (Aha! Experience). Participants (N = 83) were randomly assigned to instruct-first or explore-first conditions and taught three types of magic tricks …

Molecular Dynamics Simulations Of The Adenylate Kinase Enzyme And Its Mutant States, Beata Izabella Dulko Smith

Chemistry & Biochemistry Dissertations - Archive

Adenylate kinase (AK) is a small, monomeric enzyme present across all domains of life. It is responsible for maintaining homeostasis of an intracellular adenylate pool and catalyzes a reversible transfer of the phosphoryl group from NTP (nucleoside triphosphate) to NMP producing two NDP molecules. While most known isoforms take ATP as phosphate donor, AK3 present in mitochondrial matrix employs GTP. Crystallographic investigations revealed that the basis for its selectivity for GTP over ATP came from an additional hydrogen bond between guanosine’s O6 and backbone nitrogen of threonine is responsible for recognition of GTP. Molecular dynamics (MD) simulations have demonstrated that …

Probing Short-Range Structural Distortion Of Stereochemically Active Lone Pairs In Extended Solid-State Materials, Uyen Phuong Dang

Chemistry & Biochemistry Dissertations - Archive

The structural and electronic effects of the lone pairs play an important role in magnetic, photocatalytic, and semiconducting behaviors of materials. Investigating the role of stereochemically active ns2 lone pairs derived from p-block cations in solid-state materials is important to phenomena associated with polarizable bonding, e.g., ferroelectricity. The effect of lone pairs in ferroelectric polarization has been studied on the lead metaniobate in which the covalency between Pb and O stabilizes the in-plane polarization which leads to orthorhombic symmetry. PbTiO3 has been widely studied for ferroelectric polarization associated with the off-centering of Ti in TiO6 due to the characteristic 6s2 …

Philosophy For Children As A Form Of Spiritual Education, Olivier Michaud, Maughn Rollins Gregory

Department of Educational Foundations Scholarship and Creative Works

In the last two decades, some authors in the philosophy for children movement have theorized that the community of philosophical inquiry can be a form of spiritual practice, of the care of the self, or a wisdom practice (De Marzio, 2009; Gregory, 2009, 2013, 2014;Gregory & Laverty, 2009). Yet, it is unclear if philosophy for children is, by itself, a form of spiritual education, or if it requires some sorts of modification to be one. And, if it is or can be a form of spiritual education, we can interrogate in what ways and to what extent is it one. …

December 2022 Faculty Senate Packet, University Of Nebraska At Kearney Faculty Senate

Faculty Senate Packets

No abstract provided.

Administrative Law, Moses M. Tincher, Chelsea J. Harris

Mercer Law Review

This Article surveys cases from the Supreme Court of Georgia and the Georgia Court of Appeals from June 1, 2021 through May 31, 2022, in which principles of administrative law were a central focus of the case. Review of decisions by administrative agencies will be the first topic discussed, followed by cases discussing discretionary appeals, followed by cases discussing procedural requirements, with scope of authority to follow. The Article will conclude with cases discussing statutory construction.

Labor And Employment Law, W. Jonathan Martin Ii, Alyssa K. Peters, Patricia-Anne Brownback, David S. Cromer

Mercer Law Review

This Article surveys revisions to the Official Code of Georgia Annotated (O.C.G.A.) and decisions interpreting Georgia law from June 1, 2021 to May 31, 2022, that affect labor and employment relations for Georgia employers.

Legal Ethics, Patrick Emery Longan

Mercer Law Review

This Survey covers the period from June 1, 2021 to May 31, 2022. The Article discusses developments with respect to attorney discipline, bar admission, malpractice and other civil claims, ineffective assistance of counsel, disqualification of counsel, contempt, prosecutorial misconduct, judicial conduct, amendments to the Georgia Rules of Professional Conduct, and formal advisory opinions of the State Bar of Georgia Formal Advisory Opinion Board.

You Can’T Simply Say “No!” Almighty Ceo: Georgia’S View On The Apex Doctrine And Discovery Abuse, W. Warren Hedgepeth

Mercer Law Review

Discovery is the process that allows litigants to gather information from the opposing party in a civil lawsuit. Discovery practices differ among states, and each state’s discovery laws generally determine (1) the scope and limits of what information can be gathered, (2) how it is gathered, and (3) when it is gathered. Depositions are included in discovery methods and allow parties to ask the deponent questions relating to the case. Depositions are not only expensive but can be disruptive, especially to high-level corporate executives whose time and dedication to their companies should be their primary focus. In some jurisdictions, corporate …

Transgender Health: Exploring Medicalization And The Interactions Of Race/Ethnicity, Disability, And Education, Evan Thomas England

Master's Theses and Capstones

There is a wide range of experiences among and between transgender, BIPOC (Black, Indigenous, people of color) and disabled groups, but they all share histories of medicalization that result in marginalized health experiences and access to health care. To what extent do these health experiences and outcomes vary for U.S. adults with multiply marginalized intersectional identities? How, if at all, does the established moderating capability of education impact health outcomes for people who are transgender? Using data from the 2020 Behavioral Risk Factor Surveillance System, this study utilizes regression modelling to explore the interactions of race/ethnicity, disability, and education with …

The Effects Of Endogenous And Exogenous Progesterone On Ingroup Affiliative Bias, Abby Sibson

Psychological Science Undergraduate Honors Theses

Millions of women use hormonal contraceptives around the world and though the physical side effects are thoroughly described in the literature and clinical setting, the psychological effects have been largely ignored until recently. Recent studies have found that the use of hormonal contraceptives has an effect on women’s hormones and psychological well-being. The goal of the present research was to expand the current knowledge of the effect of hormonal contraceptives on women’s hormones and social behavior by examining how women with differing levels of progesterone due to menstrual cycle fluctuations (follicular or luteal phase) or using hormonal contraceptives (birth control …

Against Bankruptcy Exceptionalism, Jonathan M. Seymour

University of Chicago Law Review

Bankruptcy courts conceive of their mission differently than other courts do. For the Supreme Court, bankruptcy cases are ordinary statutory cases to be resolved “clearly and predictably using well established principles of statutory interpretation.” Many bankruptcy judges, though, believe that bankruptcy courts serve a distinctive mission for which ordinary adjudicative methods do not suffice. Often, that mission is characterized using the language of equity. Judges and commentators alike have observed that among the most spoken words in the bankruptcy courts are: “the bankruptcy court is a court of equity.” Others have contended that bankruptcy necessitates “creativity and flexibility,” pursuant to …

Here’S Your Number, Now Please Wait In Line: The Asylum Backlog, Federal Court Litigation, And Artificial Intelligence In Agency Adjudication, Youssef Mohamed

University of Chicago Law Review

Asylum seekers are individuals who flee to other countries to find sanctuary from the persecution suffered within the borders of their home countries. The U.N. High Commissioner for Refugees estimated that by mid-2021 there were nearly 4.4 million individuals actively seeking asylum worldwide, and the most recent data available surprisingly suggest that the United States granted asylum to only 31,429 persons in 2020.

The asylum system that is with us today was created when Congress enacted the Refugee Act with the goal of “respond[ing] to the urgent needs of persons subject to persecution in their homelands” and “provid[ing] a permanent …

State Policy In Federal Courts: Stabilizing The Burford Abstention Doctrine, Virginia Robinson

University of Chicago Law Review

The federal abstention doctrines govern the narrow circumstances under which a district court can decline to hear a case even though it has proper jurisdiction. One of those doctrines—Burford abstention—has generated a morass of confusion over when it applies and what goals it is meant to achieve. To find a way out of the morass, this Comment looks at contemporaneous developments in doctrines of federal court review—and at the procedural history of Burford itself—to pinpoint the precise problem that Burford abstention was created to solve. It argues that the Burford Court was wary of federal courts exercising jurisdiction in cases …

Light & Faith: December 2022, Taylor University

Light & Faith

No abstract provided.

Firearms And Initial Aggressors, Cynthia Lee

North Carolina Law Review

No abstract provided.

Countercyclical Corporate Governance, Aneil Kovvali

North Carolina Law Review

No abstract provided.

Chinese Celebrities’ Political Signaling On Weibo, Dan Chen, Gengsong Gao

Political Science Faculty Publications

In China, celebrities can dominate public discourse and shape popular culture, but they are under the state’s close gaze. Recent studies have revealed how the state disciplines and co-opts celebrities to promote patriotism, foster traditional values, and spread political propaganda. However, how do celebrities adapt to the changing political environment? Focusing on political signaling on Weibo, we analyze a novel dataset and find that the vast majority of top celebrities repost from official accounts of government agencies and state media outlets, though there are variations. Younger celebrities with more followers tend to repost from official accounts more. Celebrities from Taiwan …

Rapamycin Inhibits Light-Induced Necrosome Activation Occurring In Wild-Type, But Not Rpe65-Null, Mouse Retina, Chunfeng Lu, Songhua Li, Minghao Jin

School of Medicine Faculty Publications

PURPOSE. Both photodamage and aberrant visual cycle contribute to disease progress of many retinal degenerative disorders, whereas the signaling pathways causing photoreceptor death remain unclear. Here we investigated the effects of intense photo-stress on (1) necrosome activation in wild-type and RPE65-null mice, (2) interaction of p62/Sequestosome-1 with the necrosome proteins, and (3) the effects of rapamycin on photodamage-induced necrosome activation and retinal degeneration in wild-type mice. METHODS. Dark-adapted rd12 mice and 129S2/Sv mice with or without rapamycin treatment were exposed to 15,000 lux light for different times. Expression levels and subcellular localization of proteins were determined through immunoblot and immunohistochemical …

Xenotransplantation: Using Animals To Save Human Lives, Casey Restau

Honors Projects

The United States currently faces an extreme shortage of organs available for those in need of life-saving transplants. Xenotransplantation, using tissues or organs from non-human animal sources, could provide a solution to this daunting problem. The science behind xenotransplantation has been studied for several decades, however, there is yet to be a truly successful case of xenotransplantation. Major breakthroughs in this experimental treatment have been made within the past couple of years, but progress is slow. Many ethical and moral issues surrounding xenotransplantation have attributed to its controversial nature that could prevent the treatment from becoming reality.

Crystal Structures Of (Z)-(Ethene-1,2-Di­Yl)Bis­­(Di­Phenyl­Phosphine Sulfide) And Its Complex With PtIi Dichloride, Brain Rawls, Jeremy Cunningham, John E. Bender, Richard J. Staples, Shannon Biros

Open Access Publishing Support Funded Articles

The crystal structures of (Z)-(ethene-1,2-di­yl)bis­(di­phenyl­phosphine sulfide), C₂₆H₂₂P₂S₂ (I), along with its complex with Pt^II dichloride, di­chlorido[(Z)-(ethene-1,2-di­yl)bis­(di­phenyl­phosphine sulfide)-κ²S,S′]platinum(II), [PtCl₂(C₂₆H₂₂P₂S₂)] (II), are described here. Compound I features P=S bond lengths of 1.9571 (15) and 1.9529 (15) Å, with a torsion angle of 166.24 (7)° between the two phosphine sulfide groups. The crystal of compound I features both intra­molecular C—H⋯S hydrogen bonds and π–π inter­actions. Mol­ecules of compound I are held together …

Monitoring Institutional Ownership And Corporate Innovation, Steve Miller, Bin Qiu, Bin Wang, Tina Yang

Finance Faculty Research and Publications

We document a positive effect of monitoring institutional ownership on firm innovation after controlling for traditional measures of institutional ownership. We further find that monitoring institutions enhance firm innovation by: (1) incentivizing CEO risk-taking and reducing intense board monitoring, (2) alleviating agency problems, (3) attenuating managerial career concerns, and (4) mitigating corporate misvaluation. Overall, our findings highlight the importance of considering institutions’ monitoring incentives when examining the outcomes of their portfolio firms’ activities associated with high information asymmetry.

The Role Of Investment Treaties And Investor–State Dispute Settlement (Isds) In Renewable Energy Investments, Ladan Mehranvar, Sunayana Sasmal

Columbia Center on Sustainable Investment

Achieving our global goals of universal access to clean energy and averting a climate crisis will require a mass scale-up of investments in renewable energy infrastructure, redirecting capital from carbon intensive energy and transport systems. The International Renewable Energy Agency estimates that the transformation of the energy system alone will need cumulative investments to reach USD 110 trillion by 2050 to keep the rise in global temperatures to well below 2°C and towards 1.5°C during this century. Of that amount, over 80% will need to be invested in renewables, energy efficiency, end-use electrification, and power grids and flexibility.

The private …

Creating A Better Browser Fingerprint, Scott Reiling

Interdisciplinary Informatics Theses, Dissertations, and Student Creative Activity

Web browser fingerprinting is used to analyze client behavior through retrieval of browser attributes unique to the user’s browser, network and hardware profile. Third-party trackers are prevalent on the top Alexa sites and use JavaScript to retrieve and store user machine information in a stateless fashion. Stateless fingerprinting is performed through acquisition of client machine specifiers through an embedded JavaScript, which then forwards the information to a server. The client information is purportedly used to provide tailored advertising and enhance the browsing experience. However, the depth of captured client information often extends into the realm of personally identifiable information. The …