Digital Commons Network^™

Beyond Wickedness: Managing Complex Systems And Climate Change, Michael P. Vandenbergh, Jonathan M. Gilligan

Vanderbilt Law School Faculty Publications

This Article examines the argument that climate change is a "super wicked" problem. It concludes that the wicked problem concept is best viewed as a rhetorical device that served a valuable function in arguing against technocratic hubris in the early 1970s but is unhelpful and possibly counterproductive as a tool for modern climate policy analysis. Richard Lazarus improved on this analysis by emphasizing the urgency of a climate response in his characterization of the climate problem as "super wicked." We suggest another approach based on Charles Lindblom's "science of muddling through." The muddling through approach supports the rhetorical points for …

Designing Law To Enable Adaptive Governance Of Modern Wicked Problems, J. B. Ruhl, Barbara A. Cosens A. Cosens, Niko Soininen, Lance Gunderson

Vanderbilt Law School Faculty Publications

This Article contributes to the development of adaptive governance theory by articulating and situating the role of formal law and government as the facilitator, but not central controller, of adaptive governance. To advance the understanding of adaptive governance, we argue that it can be understood in the broader context of scholarship covering the observed emergence of new governance, the efforts to develop theoretical understandings through decentered theory, and the refinement of constitutional understanding through democratic experimentalism. Synthesis of these three themes in turn informs the role of law and government in working with emergent governance responses to complexity to manage …

Introduction: Governing Wicked Problems, J. B. Ruhl, J. Salzman

Vanderbilt Law School Faculty Publications

“Wicked problems.” It just says it all. Persistent social problems—poverty, food insecurity, climate change, drug addiction, pollution, and the list goes on—seem aptly condemned as wicked. But what makes them wicked, and what are we to do about them? The concept of wicked problems as something more than a generic description has its origins in the late 1960s. Professor Horst Rittel of the University of California, Berkeley, Architecture Department posed the term in a seminar to describe “that class of social system problems which are ill-formulated, where the information is confusing, where there are many clients and decision makers with …

Predicting Personality Type From Writing Style, Tanay Gottigundala

Master's Theses

The study of personality types gained traction in the early 20th century, when Carl Jung's theory of psychological types attempted to categorize individual differences into the first modern personality typology. Iterating on Jung's theories, the Myers-Briggs Type Indicator (MBTI) tried to categorize each individual into one of sixteen types, with the theory that an individual's personality type manifests in virtually all aspects of their life. This study explores the relationship between an individual's MBTI type and various aspects of their writing style. Using a MBTI-labeled dataset of user posts on a personality forum, three ensemble classifiers were created to predict …

Accelerated Molecular Dynamics For The Exascale, Andrew Garmon

All Dissertations

A range of specialized Molecular Dynamics (MD) methods have been developed in order to overcome the challenge of reaching longer timescales in systems that evolve through sequences of rare events. In this talk, we consider Parallel Trajectory Splicing (ParSplice) which works by generating large number of MD trajectory segments in parallel in such a way that they can later be assembled into a single statistically correct state-to-state trajectory, enabling parallel speedups up to N, the number of parallel workers. The prospect of strong-scaling MD is extremely enticing given the continuously increasing scale of available computational resources: on current peta-scale platforms …

Reading With Daddy: Parent Gender, Joint Book Reading, And Emergent Literacy Growth, Julia Kate Bentley

All Dissertations

For decades, educational researchers have reported joint book reading with caregivers promotes children’s emergent literacy development (Bus et al., 1995; Demir-Lira et al., 2019; NELP, 2008; Pelligrini et al., 1990). However, the bulk of this research has been conducted with mothers (Bingham, 2007; Bojczyk, 2016; Roberts et al., 2005). Mothers have been the focus of such research because, historically, the primary responsibility for caring for young children was placed on them (Fagot et al., 2012). Recent societal changes have resulted in fathers taking on more childcare roles (Banchefsky & Park, 2016). Yet, their contributions are rarely noted in literacy research. …

A Bayesian Approach To Computer Model Calibration And Model-Assisted Design, Carl Ehrett

All Dissertations

Computer models of phenomena that are difficult or impossible to study directly are critical for enabling research and assisting design in many areas. In order to be effective, computer models must be calibrated so that they accurately represent the modeled phenomena. There exists a rich variety of methods for computer model calibration that have been developed in recent decades. Among the desiderata of such methods is a means of quantifying remaining uncertainty after calibration regarding both the values of the calibrated model inputs and the model outputs. Bayesian approaches to calibration have met this need in recent decades. However, limitations …

Value Creation Stories: Professional Learning Experiences Of Artist-Teachers, Madeline Harlan Jurek

All Dissertations

Through intentionally designed authentic professional learning experiences, artist-teachers can be provided with opportunities of value. The purpose of this qualitative study is to increase understanding of the indicators of professional learning experiences within a community of practice that create value for arts educators. This qualitative study used a semi-structured interview protocol adapted from Wenger’s Value Creation Framework. Interviews were conducted with five artist-teachers in South Carolina who were identified as active participants of arts-specific professional learning. Interview data was used to compose researcher-generated Value Creation stories from study participants. Data was analyzed using Value Coding to identity the values, attitudes …

Nonlinear Modeling And Control Of Driving Interfaces And Continuum Robots For System Performance Gains, Chengshi Wang

All Dissertations

With the rise of (semi)autonomous vehicles and continuum robotics technology and applications, there has been an increasing interest in controller and haptic interface designs. The presence of nonlinearities in the vehicle dynamics is the main challenge in the selection of control algorithms for real-time regulation and tracking of (semi)autonomous vehicles. Moreover, control of continuum structures with infinite dimensions proves to be difficult due to their complex dynamics plus the soft and flexible nature of the manipulator body. The trajectory tracking and control of automobile and robotic systems requires control algorithms that can effectively deal with the nonlinearities of the system …

The Appraisal Of Stressors As An Outcome: Novel Directions On The Conceptualization And Measurement Of Work Stress, Zachary Klinefelter

All Dissertations

Though work stress research has come a long way since the early unidimensional models of stressor-outcome relationships, there continues to be a lack of consensus on how stressors influence employees, and on how individual employee characteristics influence the stressor appraisal process. This study utilized a 3-wave longitudinal design to investigate the relationships between the appraisals of challenge and hindrance stressors at work, perceived resilience, stress mindset, and psychological strain. Split into two separate models, the present study sought to extend previous research on the mediating effects of perceived resilience on the relationship between stressors and strain, and to investigate potential …

Quantum Nonequilibrium In De Broglie-Bohm Theory And Its Effects In Black Holes And The Early Universe, Adithya Pudukkudi Kandhadai

All Dissertations

Quantum mechanics is a highly successful fundamental theory which has passed every experimental test to date. Yet standard quantum mechanics fails to provide an adequate description of measurement processes, which has long been rationalized with operationalist and positivist philosophical arguments but is nevertheless a serious shortfall in a fundamental theory. In this dissertation we introduce quantum mechanics with a discussion of the measurement problem. We then review the de Broglie-Bohm pilot-wave formulation, a nonlocal hidden-variables theory where the state of a quantum system is described by a configuration (independent of measurements) in addition to the wave function, and we apply …

Uncertainty Principles In Framed Hilbert Spaces, Haodong Li

All Dissertations

The uncertainty principle is one of the most fundamental concepts in harmonic analysis. It has many facets and appears in many different forms. In the first two chapters of the thesis, we state the classical uncertainty principle and the Balian-Low theorem, and introduce the concept of framed Hilbert spaces as a general setting for studying problems of uncertainty principle type. These spaces could be viewed as a special type of reproducing kernel Hilbert spaces which include many function spaces that play an important role in harmonic analysis.

The thesis mainly consists of Chapters 3-5 whose common theme is the uncertainty …

Me-Em Enewsbrief, October-December 2020, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering eNewsBrief

No abstract provided.

Markovian Approach To Stock Price Modelling In The Nigerian Oil And Gas Sector, Ayo Adekunle S., Uwabor Eboigbe S.

CBN Journal of Applied Statistics (JAS)

The study investigates the stock price movement of quoted Nigerian oil and gas firms using the Markovian model. Specifically, the study estimates the change in likelihoods and steady-state distribution of the share prices of the firms to determine the average time spent by the share price to move to another state and the turnover rate of the selected stocks. Markov chain-based stochastic modelling approach was employed by using the daily closing share prices of all the seven oil and gas firms quoted on the Nigerian Stock Exchange from April 2017 to January 2020. The study finds that the transition probabilities …

Purchasing Power Parity Approach To Exchange Rate Misalignment In Nigeria, Nakorji Musa, Agboegbulem Ngozi T. I., Gaiya Blessing A., Atoi Ngozi V.

CBN Journal of Applied Statistics (JAS)

This study examines the purchasing power parity (PPP) approach to the determination of exchange rate misalignment in Nigeria by using two variants of the PPP: the absolute PPP (aPPP) and the relative PPP (rPPP). Data on the Nigerian Naira to US Dollar (N/$), British Pound (N/£) and Chinese Yuan (N/¥) interbank exchange rates, Nigeria consumer price index and Inflation as well as the US, UK and China consumer price indices and inflation rates spanning 2008:M1 to 2018:M12 were utilized. A recently modified fractional cointegration framework was employed, taking care of smooth structural breaks and nonlinearity, while the unit root tests …

Agent-Relative Consequentialism And Collective Self-Defeat, Matthew Hammerton

Research Collection School of Social Sciences

Andrew Forcehimes and Luke Semrau argue that agent-relative consequentialism is implausible because in some circumstances it classes an act as impermissible yet holds that the outcome of all agents performing that impermissible act is preferable. I argue that their problem is closely related to Derek Parfit's problem of ‘direct collective self-defeat’ and show how Parfit's plausible solution to his problem can be adapted to solve their problem.

The Dynamic Spectroscopic Ellipsometry(Se) Data For Aluminum Thin Films Oxidations, David D. Allred, Tahereh G. Avval

ScholarsArchive Data

The dynamic spectroscopic ellipsometry(SE) data captured on oxidation of ultra thin evaporated aluminum film over starting a few minutes after evaporation and continued for four hours. The Aluminum layer was ca. 15 nm thick. This data needs to be interpreted with J.A. Woollam CompleteEase software. The Aluminum was modeled with Lorentz model and the Alumina was modeled using Cody-Lorentz.

The Lived Experience Of Obesity, Spirituality, And Health Behaviors In African American Women, Andrea S. Poynter

Electronic Theses and Dissertations

Obesity is one of the fastest-growing health concerns impacting all racial, ethnic, gender, and socioeconomic groups in the United States of America. More than one-third of the U.S. adult population is classified as being obese (Obesity Society, 2014). Novak and Brownell (2012) identified that “obesity rates are consistently rising higher each year than in previous years” (p. 2345). Obesity has reached epidemic proportions in all races and genders within the US with African American women comprising a majority of those impacted by this chronic health condition. Obesity rates are well documented within the literature but what is lacking is the …

Optimizing Energy Power Consumption Of Freight Railroad Bearings Using Experimental Data, Carlos Eliasar Lopez Iii

Theses and Dissertations

Throughout the railway industry, trains use systems that record total energy efficiency of a train but not energy efficiency or consumption by components. Monitoring freight bearing power consumption can support the railroad industry efforts to maintain the railroad economic competitiveness and minimize the environmental impact.

For more than a decade now, the University Transportation Center for Railway Safety (UTCRS) at the University of Texas Rio Grande Valley (UTRGV) has been collecting power consumption data for railroad bearings under various loads, speeds, ambient temperatures, bearing condition, and bearing classes. Specifically, data such as temperatures, voltages, speed, and load were collected to …

A Targeted Adversarial Attack On Support Vector Machine Using The Boundary Line, Yessenia Rodriguez

Theses and Dissertations

In this thesis, a targeted adversarial attack is explored on a Support Vector Machine (SVM). SVM is defined by creating a separating boundary between two classes. Using a target class, any input can be modified to cross the “boundary line,” making the model predict the target class. To limit the modification, a percentage of an image of the target class is used to get several random sections. Using these sections, the input will be moved in small steps closer to the boundary point. The section that took the least number of steps to cause the model to predict the target …

The Integration Of Iterative Convergent Photogrammetric Models And Uav View And Path Planning Algorithms Into The Aerial Inspection Practices In Areas With Aerial Hazards, Michael James Freeman

Theses and Dissertations

Small unmanned aerial vehicles (sUAV) can produce valuable data for inspections, topography, mapping, and 3D modeling of structures. Used by multiple industries, sUAV can help inspect and study geographic and structural sites. Typically, the sUAV and camera specifications require optimal conditions with known geography and fly pre-determined flight paths. However, if the environment changes, new undetectable aerial hazards may intersect new flight paths. This makes it difficult to construct autonomous flight path missions that are safe in post-hazard areas where the flight paths are based on previously built models or previously known terrain details. The goal of this research is …

Safety In The Educational Environment: Rural District Administrator Perceptions Of School Safety In Northeast Tennessee Public Schools, Richard A. True

Electronic Theses and Dissertations

A qualitative research study was conducted to identify, describe, and understand the perceptions of administrators of public school districts in northeast Tennessee regarding school safety. Using a semi-structured interview process, the researcher identified emerging themes regarding the factors most associated with safe school districts, the factors most associated with unsafe school districts, the items identified as needed to improve safety, and the topics identified as future safety issues at the school and district level. Through such study, the researcher was able to develop an understanding regarding the overall safety of school districts in northeast Tennessee and the specific components that …

Promoting The Sustainability Of The Gulf Of Maine Recreational Groundfish Fishery Through Discard Mortality Estimation, Mitigation, And Outreach, Connor W. Capizzano

Graduate Doctoral Dissertations

Recreational fishing (i.e., angling), a popular leisure activity that provides socio-economic benefits to human societies around the world, can represent a significant source of fishing mortality and impact fish populations and marine ecosystems. Although fish are often released by recreational anglers to reduce fishing mortality rates, the efficacy of discarding fish is often criticized given that fish can die from the factors experienced during the capture, handling, and release process (i.e., discard mortality). Despite this recognition, the rate at which fish suffer discard mortality in specific commercial and recreational fisheries is often unknown and difficult to obtain due to logistical …

A Finite State Automata-Based Description Of Device States For Function Modeling Of Multi-State Technical Devices, Ahmed Mohammed Sobhan Chowdhury

Theses and Dissertations

Many modern and innovative design problems require multi-modal, reconfigurable solutions. Function modeling (FM) is a common tool used to explore solutions in early stages of mechanical engineering design. Currently, function structure representations do not abet the modeling of formally-defined reconfigurable function models as graph-based function models used in early-stage systems design usually represent only one operational mode of the system. Currently there is a need, but no rigorous formalism to model multiple possible modes in the model and logically predict the behavior of the system as it transitions between the modes. Additionally, function modeling representations will benefit from dynamically capturing …

Nonlinear Frequency Tuning Of Pre-Curved Micro-Scale Beams, Mackenzie Rae Robatin

Theses and Dissertations

Micro-electromechanical systems (MEMS) have many common advantages in applications due to their small size and ability to integrate with electronics. For MEMS with vibrating elements, other advantages include their tunable resonant frequencies and the frequency range in which the systems operate. Also, the damping in these devices is often so light that it is nearly negligible, resulting in sharp resonance peaks with good frequency selectivity. Most such devices are designed to operate in their linear range. However, large amplitudes are often desired in order to reduce the relative effects of noise. In such cases, due to mechanical and electrostatic nonlinear …

Evaluation Of Accumulated Strain From Both Cyclic Triaxial And Static Creep Tests On Unbound Pavement Materials, Amir Mohammad Sajjadi

Theses and Dissertations

In this research, the behavior of Limerock (LR) aggregates blended with different reclaimed asphalt pavement (RAP) materials were investigated as an unbound base layer. Various combinations of LR and RAP, including 100%LR, 25%RAP75%LR, 50%RAP50%LR, and 100%RAP, were evaluated. Three main experiments performed on the samples were: static creep, static triaxial test, and cyclic triaxial test. The cyclic triaxial test was performed to measure the resilient modulus (MR) of materials. The results of the static triaxial test for 100% RAP showed that the deviator stress at failure steadily increased by increasing the confining pressure, while the 100% LR showed a maximum …

Large Eddy Simulation Of Turbidity Currents In A Narrow Channel With Different Obstacle Configurations, Danial Goodarzi, Kaveh Sookhak Lari, Ehsan Khavasi, Soroush Abolfathi

Research outputs 2014 to 2021

© 2020, The Author(s). Turbidity currents are frequently observed in natural and man-made environments, with the potential of adversely impacting the performance and functionality of hydraulic structures through sedimentation and reduction in storage capacity and an increased erosion. Construction of obstacles upstream of hydraulic structures is a common method of tackling adverse effects of turbidity currents. This paper numerically investigates the impacts of obstacle’s height and geometrical shape on the settling of sediments and hydrodynamics of turbidity currents in a narrow channel. A robust numerical model based on LES method was developed and successfully validated against physical modelling measurements. This …

Spatial And Temporal Variability Of Carbonaceous Aerosol Absorption In The Po Valley, Stefania Gilardoni, Paola Massoli, Angela Marinoni, Claudio Mazzoleni, Andrew Freedman, Giovanni Lonati, Silvana De Iuliis, Vorne Gianelle

Michigan Tech Publications, Part 1

Knowledge gaps in the optical properties of carbonaceous aerosols account for a significant fraction of the uncertainty of aerosol-light interactions in climate models. Both black carbon (BC) and brown carbon (BrC) can display a range of optical properties in ambient aerosol due to different sources and chemical transformation pathways. This study investigates the optical absorption properties of BC and BrC at an urban and a rural site in the Po Valley (Italy), a known European pollution hot spot. We observed spatial and seasonal variability of aerosol absorption coefficients, with the highest values measured in winter at the urban site of …

Parton Distribution Functions From Ioffe Time Pseudodistributions From Lattice Calculations: Approaching The Physical Point, Bálint Joó, Joseph Karpie, Kostas Orginos, Anatoly V. Radyushkin, David G. Richards, Savvas Zafeiropoulos

Physics Faculty Publications

We present results for the unpolarized parton distribution function of the nucleon computed in lattice QCD at the physical pion mass. This is the first study of its kind employing the method of Ioffe time pseudodistributions. Beyond the reconstruction of the Bjorken-x dependence, we also extract the lowest moments of the distribution function using the small Ioffe time expansion of the Ioffe time pseudodistribution. We compare our findings with the pertinent phenomenological determinations.

Structural Characterization Of Two Large Icosahedral Dna Viruses And Their Capsid Assembly Mechanisms, Yuejiao Xian

Open Access Theses & Dissertations

In the last three decades, many large DNA viruses were discovered and grouped into a loosely defined clade of Nucleocytoplasmic Large DNA Viruses (NCLDVs). NCLDVs infect a wide range of hosts from single cellular protists to large animals. Recently, these viruses were classified as a new phylum of Nucleocytoviricota under the kingdom of Bamfordvirae. The genomes of these Nucleocytoviricota viruses (NCVs) are remarkedly large and complicated, containing many cellular genes from all three domains of life, which raised intensive debates on their evolutionary origins. Despite being classified in the same phylum, their physical structures vary and can be roughly classified …