Digital Commons Network^™

Seasonal Spatial Segregation In Blue Sharks (Prionace Glauca) By Sex And Size Class In The Northeast Pacific Ocean, Sara M. Maxwell, Kylie L. Scales, Steven Bograd, Dana K. Briscoe, Heidi Dewar, Elliott L. Hazen, Rebecca L. Lewison, Heather Welch, Larry B. Crowder

Biological Sciences Faculty Publications

Aim: Animal tracking can provide unique insights into the ecology and conservation of marine species, such as the partitioning of habitat, including differences between life history stages or sexes, and can inform fisheries stock assessments, bycatch reduction and spatial management such as dynamic management.

Location: Northeast Pacific Ocean.

Methods: We used satellite tracking data from 47 blue sharks (Prionace glauca) from the Northeast Pacific to determine movements and home range along the west coast of North America, and sex–size class (immature females, mature males) specific habitat preferences using boosted regression trees. Using a suite of static and dynamic …

Life In The Noodles, Junnan Xia

Theses

One day, a Chinese international student, Zhou Yu, is considering his going home to China, since he doesn’t have a good life in America. That day, when Yu is in the supermarket shopping, he sees his ex-girl friend, Chen Xue. Xue is friendly and asks Yu to come to her home and she wants to treat Yu a bowl of noodles, which is her special treat that she made for Yu before. Yu struggles but finally he is moved by Xue’s great passion. When they arrived at Xue’s place, they start to eat and talk. Xue is curious about Yu’s …

The Successful Transition Of Black Men At Historically White Universities, Regina M. George

Master's Theses and Doctoral Dissertations

There is something going on with Black men in America who go to college. As university enrollment has become more diverse with all ethnic and economic groups attending in greater numbers, as Black women are graduating at unprecedented rates, as postsecondary education becomes an increasingly significant employment requirement, the persistence to graduation rate of Black men as a group is among the lowest. Historically White institutions of higher education seek to ensure academic success and increase 4-6 year graduation rates for all students. Perhaps Black men can inform the process and lift everyone with their knowledge. This is a qualitative …

Vitellogenin Receptor As A Target For Tick Control: A Mini-Review, Robert D. Mitchell Iii, Daniel E. Sonenshine, Adalberto A. Pérez De León

Biological Sciences Faculty Publications

While much effort has been put into understanding vitellogenesis in insects and other organisms, much less is known of this process in ticks. There are several steps that facilitate yolk formation in developing oocytes of which the vitellogenin receptor (VgR) is a key component. The tick VgR binds vitellogenin (Vg) circulating in the hemolymph to initiate receptor-mediated endocytosis and its transformation into vitellin (Vn). The conversion of Vg into Vn, the final form of the yolk protein, occurs inside oocytes of the female tick ovary. Vn is critical to tick embryos since it serves as the nutritional source for their …

Multistate Survey Of American Dog Ticks (Dermacentor Variabilis) For Rickettsia Species, Joy A. Hecht, Michelle E.J. Allerdice, Elizabeth A. Dykstra, Laura Mastel, Rebecca J. Eisen, Tammi L. Johnson, Holly D. Gaff, Andrea S. Varela-Stokes, Jerome Goddard, Benedict B. Pagac, Christopher D. Paddock, Sandor E. Karpathy

Biological Sciences Faculty Publications

Dermacentor variabilis, a common human-biting tick found throughout the eastern half and along the west coast of the United States, is a vector of multiple bacterial pathogens. Historically, D. variabilis has been considered a primary vector of Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever. A total of 883 adult D. variabilis, collected between 2012 and 2017 from various locations in 12 states across the United States, were screened for rickettsial DNA. Tick extracts were evaluated using three real-time PCR assays; an R. rickettsii-specific assay, a Rickettsia bellii-specific assay, and a Rickettsia genus-specific …

Incorporating Ntcp Into Randomized Trials Of Proton Versus Photon Therapy, Jen Yu

All Publications

No abstract provided.

Dynamics Of Two Pathogens In A Single Tick Population, Alexis White, Elsa Schaefer, Chelsea Wright-Thompson, Christopher M. Kribs, Holly Gaff

Biological Sciences Faculty Publications

A mathematical model for a two-pathogen, one-tick, one-host system is presented and explored. The goal of this model is to determine how long an invading pathogen persists within a tick population in which a resident pathogen is already established. The numerical simulations of the model demonstrate the parameter ranges that allow for coexistence of the two pathogens. Sensitivity analysis highlights the importance of vector-borne, tick-to-host, transmission rates on the invasion reproductive number and persistence of the pathogens over time. The model is then applied to a case study based on a reclaimed swampland field site in southeastern Virginia using field …

Demographic Response Of The Gambian Gerbil To Seasonal Changes In Savannah Fallow Fields, Safianu Rabiu, Robert K. Rose

Biological Sciences Faculty Publications

The Savannah gerbil, Gerbilliscus gambianus (Muridae: Gerbillinae) is important to the ecological relations of the dry grassland ecosystem of West Africa, as well as, being a zoonotic agent of human diseases and po-tential crop pest. We examined the impact of seasonal changes on the population dynamics of G. gambianus in northern Nigeria, by completing population estimates using capture–mark–recapture (CMR) and indirect population density indices (PDI) methods. The latter included fecal pellet counts and limited spotlightening. During 1990–1992 we collected both CMR and PDI data, and established their relationship by regression, thus calibrating the PDI values to CMR estimator. We also …

Point Spread Function Determination In The Scanning Electron Microscope And Its Application In Restoring Images Acquired At Low Voltage, Mandy C. Nevins

Theses

Electron microscopes have the capability to examine specimens at much finer detail than a traditional light microscope. Higher electron beam voltages correspond to higher resolution, but some specimens are sensitive to beam damage and charging at high voltages. In the scanning electron microscope (SEM), low voltage imaging is beneficial for viewing biological, electronic, and other beam-sensitive specimens. However, image quality suffers at low voltage from reduced resolution, lower signal-to-noise, and increased visibility of beam-induced contamination. Most solutions for improving low voltage SEM imaging require specialty hardware, which can be costly or system-specific. Point spread function (PSF) deconvolution for image restoration …

Optimizing Interconnectivity Among Networks Under Attacks, Pankaz Das

Electrical and Computer Engineering ETDs

Networks may need to be interconnected for various reasons such as inter-organizational communication, redundant connectivity, increasing data-rate and minimizing delay or packet-loss, etc. However, the trustworthiness of an added interconnection link cannot be taken for granted due to the presence of attackers who may compromise the security of an interconnected network by intercepting the interconnections. Namely, an intercepted interconnection link may not be secured due to the data manipulations by attackers. In the first part of this dissertation, the number of interconnections between the two networks is optimized for maximizing the data-rate and minimizing the packet-loss under the threat of …

Workplace Gender Discrimination And Job Performance In Egypt: The Moderating Role Of Equity Sensitivity, Mohamad Saad Mohamad

English Language and Literature

Workplace gender discrimination is a significant problem in Egypt. However, there is limited research on Workplace gender discrimination and its consequences. The current research tries to examine the relationships between workplace gender discrimination and task and contextual job performances. Moreover, the moderating effect of equity sensitivity on these relationships is also investigated. A convenience sample on 312 working women was drawn from different work settings in Cairo, Egypt. They responded to a three-part questionnaire that assesses workplace gender discrimination, equity sensitivity, and job performance. The results indicated that workplace gender discrimination was negatively associated with both of task and contextual …

A Gene Based Approach To Test Genetic Association Based On An Optimally Weighted Combination Of Multiple Traits., Jianjun Zhang, Qiuying Sha, Guanfu Liu, Xuexia Wang

Michigan Tech Publications, Part 1

There is increasing evidence showing that pleiotropy is a widespread phenomenon in complex diseases for which multiple correlated traits are often measured. Joint analysis of multiple traits could increase statistical power by aggregating multiple weak effects. Existing methods for multiple trait association tests usually study each of the multiple traits separately and then combine the univariate test statistics or combine p-values of the univariate tests for identifying disease associated genetic variants. However, ignoring correlation between phenotypes may cause power loss. Additionally, the genetic variants in one gene (including common and rare variants) are often viewed as a whole that affects …

Unconventional Oil And Gas Energy Systems: An Unidentified Hotspot Of Antimicrobial Resistance?, Maria Fernanda Campa, Amy K Wolfe, Stephen Techtmann, Ann-Marie Harik, Terry C Hazen

Michigan Tech Publications, Part 1

Biocides used in unconventional oil and gas (UOG) practices, such as hydraulic fracturing, control microbial growth. Unwanted microbial growth can cause gas souring, pipeline clogging, and microbial-induced corrosion of equipment and transportation pipes. However, optimizing biocide use has not been a priority. Moreover, biocide efficacy has been questioned because microbial surveys show an active microbial community in hydraulic fracturing produced and flowback water. Hydraulic fracturing produced and flowback water increases risks to surface aquifers and rivers/lakes near the UOG operations compared with conventional oil and gas operations. While some biocides and biocide degradation products have been highlighted as chemicals of …

The Gini Index: A Lens For Analyzing Inequality In An Interdisciplinary College Classroom, Jared Warner, Vivian Lim

Numeracy

The Gini index is one of the most commonly used indicators of income inequality, and its computation and interpretation require a thorough understanding of various quantitative literacy concepts. In this article, we describe a unit for an interdisciplinary quantitative literacy course at a community college that treats concepts of ratio and proportion, percentages, and mathematical modeling through an exploration of income inequality and the Gini index. The broader theme of the interdisciplinary course is immigration, so the unit also invites students to explore connections between the Gini index and immigration. Employing in-class simulations, interactive online applets, and real-world data sets, …

Ebullition Of Oxygen From Seagrasses Under Supersaturated Conditions, Matthew H. Long, Kevin Sutherland, Scott D. Wankel, David J. Burdige, Richard C. Zimmerman

OES Faculty Publications

Gas ebullition from aquatic systems to the atmosphere represents a potentially important fraction of primary production that goes unquantified by measurements of dissolved gas concentrations. Although gas ebullition from photosynthetic surfaces has often been observed, it is rarely quantified. The resulting underestimation of photosynthetic activity may significantly bias the determination of ecosystem trophic status and estimated rates of biogeochemical cycling from in situ measures of dissolved oxygen. Here, we quantified gas ebullition rates in Zostera marina meadows in Virginia, U.S.A. using simple funnel traps and analyzed the oxygen concentration and isotopic composition of the captured gas. Maximum hourly rates of …

Maia: A Language For Mandatory Integrity Controls Of Structured Data, Wassnaa Al-Mawee, Paul Bonamy, Steven Carr, Jean Mayo

Michigan Tech Publications, Part 1

The integrity of systems files is necessary for the secure functioning of an operating system. Integrity is not generally discussed in terms of complete computer systems. Instead, integrity issues tend to be either tightly coupled to a particular domain (e.g. database constraints), or else so broad as to be useless except after the fact (e.g. backups). Often, file integrity is determined by who modifies the file or by a checksum. This paper focuses on a general model of the internal integrity of a file. Even if a file is modified by a subject with trust or has a valid checksum, …

When Does Big Law Work?, Abraham Cable

Faculty Scholarship

No abstract provided.

Symmetric Constitutionalism: An Essay On Masterpiece Cakeshop And The Post-Kennedy Supreme Court, Zachary S. Price

Faculty Scholarship

No abstract provided.

Hyperlocal Responses To The Salt Deduction Limitation, Manoj Viswanathan

Faculty Scholarship

No abstract provided.

Asian Americans And Affirmative Action—Again, Frank Wu

Faculty Scholarship

No abstract provided.

Halogen Bonding Interactions For Aromatic And Non-Aromatic Explosive Detection, Arjun K. A. Jaini, Lillian B. Hughes, Michael K. Kitimet, Kevin John Ulep, Michael C. Leopold, Carol A. Parish

Chemistry Faculty Publications

Improved sensing strategies are needed for facile, accurate and rapid detection of aromatic and nonaromatic explosives. Density functional theory was used to evaluate the relative binding interaction energies between halogen-containing sensor model molecules and nitro-containing explosives. Interaction energies ranged from –18 to –14 kJ/mol and highly directional halogen bonding interactions were observed with bond distances ranging between 3.0 and 3.4 Å. In all geometry optimized structures, the sigma-hole of electropositive potential on the halogen aligned with a lone pair of electrons on the nitro-moiety of the explosive. The computational results predict that the strongest interactions will occur with iodine-based sensors …

First Photometric Investigation Of Some Asas Binary Systems, Burak Ulaş

Turkish Journal of Physics

We present the first light curve solutions of the four binary systems observed and catalogued by the All Sky Automated Survey (ASAS) program. The light curves are analyzed by using PHOEBE software, which is based on the Wilson?Devinney method. The light curve parameters are derived and the estimated physical parameters are calculated from the result of the analyses. We compare our targets to well-known binaries of similar type on the Hertzsprung-Russell diagram and mass-radius plane. The evolutionary states of the components are also discussed.

When Ais Outperform Doctors: Confronting The Challenges Of A Tort-Induced Over-Reliance On Machine Learning, A. Michael Froomkin, Ian Kerr, Joelle Pineau

Articles

Someday, perhaps soon, diagnostics generated by machine learning (ML) will have demonstrably better success rates than those generated by human doctors. What will the dominance of ML diagnostics mean for medical malpractice law, for the future of medical service provision, for the demand for certain kinds of doctors, and in the long run for the quality of medical diagnostics itself?

This Article argues that once ML diagnosticians, such as those based on neural networks, are shown to be superior, existing medical malpractice law will require superior ML-generated medical diagnostics as the standard of care in clinical settings. Further, unless implemented …

Black, Poor, And Gone: Civil Rights Law’S Inner-City Crisis, Anthony V. Alfieri

Articles

In recent years, academics committed to a new law and sociology of poverty and inequality have sounded a call to revisit the inner city as a site of cultural and socio-legal research. Both advocates in anti-poverty and civil rights organizations, and scholars in law school clinical and university social policy programs, have echoed this call. Together they have embraced the inner city as a context for experiential learning, qualitative research, and legal-political advocacy regarding concentrated poverty, neighborhood disadvantage, residential segregation, and mass incarceration. Indeed, for academics, advocates, and activists alike, the inner city stands out as a focal point of …

The Casualty Of Investor Protection In Times Of Economic Crisis, Kathleen Claussen

Articles

No abstract provided.

The Last Refuge Of Scoundrels: The Problem Of Truth In A Time Of Lying, Bernard E. Harcourt

Faculty Scholarship

This essay addresses the problem of truth today in light of the common belief, especially among progressives, that we have entered a post-truth age, as well as of the frequent claim that our post-truth society is the fault of postmodernists and their challenge to the objectivity of truth. The essay does not resolve the strategic question whether the post-truth argument is, as a purely tactical political matter, an effective approach to respond to the onslaught of misrepresentations and lies by President Donald Trump and the New Right. Instead, it explores the post-truth argument from a more synoptic perspective regarding the …

The Value Of Professional Learning Communities As Perceived By Novice Secondary School Teachers, Brandon J. Cotter

All Capstone Projects

The purpose of this study is to examine the perceived value that novice secondary school teachers have regarding the professional learning community process at Argo Community High School. The study uses qualitative methods in order to gather information about the novice teachers’ perceptions.

During the study, novice teachers with three or less years of experience were invited and selected to partake in completing a survey and structured interviews that helped provide insight as to their perceptions on the effectiveness of professional learning communities in making novice teachers feel supported through collaborative efforts.

The Influence Of Arabic Parental Involvement On Their Children's Academic Progress Currently Enrolled In First Through Third Grade In Worth School District 127, Sinead Chambers

All Capstone Projects

Worth School District 127 is located in the south suburbs of Chicago and maintains a K-8 student population of approximately 1,139 students. Twenty-one percent of Worth School District 127’s student population is considered to be English Learners (EL), and forty-seven percent of that population of students are Arabic students. There are currently two certified Arabic instructors employed by the district and one Arabic English Learners Tutor. All three of these staff members also serve as cultural brokers for Worth School District 127 and offer much academic and social support to the Arabic community of Worth. The number of Arabic families …

Examining Organizational Learning Culture (Olc) In Schools Adopting Trauma-Informed Practices, Constance Grimm-Grason

All Capstone Projects

Trauma-informed practices represent a departure from the status-quo disciplinary practices originating from zero-tolerance approaches. This departure from the status-quo represents a transformative change in schools. Teachers are often the initial responders to student struggles or misbehaviors, and the teacher’s response is conditioned by their belief system, their self-efficacy, and the norms of the school where they teach. The shift to supportive school discipline approaches, such as trauma-informed practices, may alter the formal discipline norms of the school, but the shift may not transfer to the teacher’s belief systems, their sense of self-efficacy with trauma, or the informal norms of the …

An Anti-Deficit Approach To The Study Of Persistence: Factors Influencing Persistence Among Black Males Attending Community College, Donna K. Williams

All Capstone Projects

The vast majority of literature on postsecondary Black males emphasizes the lack of academic success for this segment. Research reports that Black males have lower levels of academic achievement, ranking at or near the bottom of most success indicators, which include enrollment, persistence, engagement, and attainment. However, in examining the discourse on postsecondary Black males, a great deal of research is deficit-based.

Providing a counter-narrative to the plethora of deficit-based literature on postsecondary Black males, this study is guided by an anti-deficit approach that seeks to highlight factors that influence persistence among Black men attending community college. This mixed method …