Digital Commons Network^™

Black Feminist Citational Praxis And Disciplinary Belonging, Bianca C. Williams

Publications and Research

What does a Black feminist citational practice look and feel like? This contribution to the #CiteBlackWomen colloquy focuses on two arguments: First, that Black feminist citational praxis is one of the major interventions Black women scholars contribute to the academy; and second, that anthropology’s neglect and erasure of Black feminist anthropologists relates to disciplinary (un)belonging. I explore how citation and “disciplinary belonging” influence hiring practices, doctoral training, intellectual genealogies, and what is valued as anthropological knowledge.

Perspectives On Determinism In Quantum Mechanics: Born, Bohm, And The 'Quantal Newtonian' Laws, Viraht Sahni

Publications and Research

Quantum mechanics has a deterministic Schrödinger equation for the wave function. The Göttingen-Copenhagen statistical interpretation is based on the Born Rule that interprets the wave function as a ‘probability amplitude’. A precept of this interpretation is the lack of determinism in quantum mechanics. The Bohm interpretation is that the wave function is a source of a field experienced by the electrons, thereby attributing determinism to quantum theory. In this paper we present a new perspective on such determinism. The ideas are based on the equations of motion or ‘Quantal Newtonian’ Laws obeyed by each electron. These Laws, derived from the …

Getting Back: The Chiffons’ Sonic Reclamation, Hilarie Ashton

Publications and Research

Sixties girl group the Chiffons are famous for their soaring 1964 hit “He’s So Fine,” a song in turn remembered almost as often for its plagiarism by George Harrison than in its own right. Much of the rest of their catalogue, including the tremendous “I Have a Boyfriend,” gets shunted into historical and critical gaps that paint rock music history as controlled by men. In this article, I examine the Chiffons in their own right, reframing a story of well-worn sonic theft to center on the group it obscured, through and alongside interpretative contradictions, assumptions, and historical lacunae. I show …

Extractable Entanglement From A Euclidean Hourglass, Takanori Anegawa, Norihiro Iizuka, Daniel Kabat

Publications and Research

We previously proposed that entanglement across a planar surface can be obtained from the partition function on a Euclidean hourglass geometry. Here we extend the prescription to spherical entangling surfaces in conformal field theory. We use the prescription to evaluate log terms in the entropy of a conformal field theory in two dimensions, a conformally coupled scalar in four dimensions, and a Maxwell field in four dimensions. For Maxwell we reproduce the extractable entropy obtained by Soni and Trivedi. We take this as evidence that the hourglass prescription provides a Euclidean technique for evaluating extractable entropy in quantum field theory.

Superluminal Propagation On A Moving Braneworld, Brian Greene, Daniel Kabat, Janna Levin, Arjun S. Menon

Publications and Research

We consider a braneworld scenario in the simplest setting, M₄ × S¹, with a four-dimensional (4D) Minkowski metric induced on the brane, and establish the possibility of superluminal propagation. If the brane is at rest, the 4D Lorentz symmetry of the brane is exact, but if the brane is in motion, it is broken globally by the compactification. By measuring bulk fields, an observer on the brane sees a slice through a higher-dimensional field profile, which carries an imprint of the extra dimensions even when the brane is at rest. If the brane is in motion, we …

Defining Entanglement Without Tensor Factoring: A Euclidean Hourglass Prescription, Takanori Anegawa, Norihiro Iizuka, Daniel Kabat

Publications and Research

We consider entanglement across a planar boundary in flat space. Entanglement entropy is usually thought of as the von Neumann entropy of a reduced density matrix, but it can also be thought of as half the von Neumann entropy of a product of reduced density matrices on the left and right. The latter form allows a natural regulator in which two cones are smoothed into a Euclidean hourglass geometry. Since there is no need to tensor factor the Hilbert space, the regulated entropy is manifestly gauge invariant and has a manifest state-counting interpretation. We explore this prescription for scalar fields, …

Exploratory Programming In The Arts And Humanities [Book Review], Kelly Hammond

Publications and Research

Exploratory Programming is a testament to what open-access can mean, especially in an e-learning environment. Used in full, it is a free course (that relies on free and open software) from a gifted MIT professor whose pedagogy is clear in structure and tone. He scaffolds, promotes predictive thinking, lauds collaborative learning, and urges readers to do not just to read. Used in part, it can be equally powerful.

Quark And Gluon Entanglement In The Proton On The Light Cone At Intermediate X, Adrian Dumitru, Eric Kolbusz

Publications and Research

In QCD with $N_c$ colors the antisymmetric valence quark color space singlet state $\sim \epsilon_{i_1\cdots i_{N_c}} |i_1,\cdots, i_{N_c}\rangle$ of the proton corresponds to the reduced density matrix $\rho_{ij}=(1/N_c) \delta_{ij}$ for a single color degree of freedom. Its degenerate spectrum of eigenvalues, $\lambda_i=1/N_c$, the purity $\tr \rho^2 = 1/N_c$, and the von Neumann entropy $S_\mathrm{vN}=\log(N_c)$ all indicate maximal entanglement of color. On the other hand, for $N_c\to\infty$ the spatial wave function of the proton factorizes into valence quark wave functions determined by a mean field [E. Witten, Nucl. Phys. B160, 57 (1979)] where there is no entanglement of spatial degrees of …

Two-Loop Four-Fermion Scattering Amplitude In Qed, R. Bonciani, A. Broggio, S. Di Vita, A. Ferroglia, M. K. Mandal, P. Mastrolia, L. Mattiazzi, A. Primo, J. Ronca, U. Schubert, W. J. Torres Bobadilla, F. Tramontano

Publications and Research

We present the first fully analytic evaluation of the transition amplitude for the scattering of a massless into a massive pair of fermions at the two-loop level in quantum electrodynamics. Our result is an essential ingredient for the determination of the electromagnetic coupling within scattering reactions, beyond the currently known accuracy, which has a crucial impact on the evaluation of the anomalous magnetic moment of the muon. It will allow, in particular, for a precise determination of the leading hadronic contribution to the (g − 2)_μ in the MUonE experiment at CERN, and therefore can be used to …

Spin(7) Orientifolds And 2d N = (0, 1) Triality, Sebastían Franco, Alessandro Mininno, Ángel M. Uranga, Xingyang Yu

Publications and Research

We present a new, geometric perspective on the recently proposed triality of 2d N = (0, 1) gauge theories, based on its engineering in terms of D1-branes probing Spin(7) orientifolds. In this context, triality translates into the fact that multiple gauge theories correspond to the same underlying orientifold. We show how Spin(7) orientifolds based on a particular involution, which we call the universal involution, give rise to precisely the original version of N = (0, 1) triality. Interestingly, our work also shows that the space of possibilities is significantly richer. Indeed, general Spin(7) orientifolds extend triality to theories that can …

Bft2: A General Class Of 2d N = (0, 2) Theories, 3-Manifolds And Toric Geometry, Sebastían Franco, Xingyang Yu

Publications and Research

We introduce and initiate the study of a general class of 2d N = (0, 2) quiver gauge theories, defined in terms of certain 2-dimensional CW complexes on oriented 3- manifolds. We refer to this class of theories as BFT₂’s. They are natural generalizations of Brane Brick Models, which capture the gauge theories on D1-branes probing toric Calabi-Yau 4-folds. The dynamics and triality of the gauge theories translate into simple transformations of the underlying CW complexes. We introduce various combinatorial tools for analyzing these theories and investigate their connections to toric Calabi-Yau manifolds, which arise as their …

2d N = (0, 1) Gauge Theories And Spin(7) Orientifolds, Sebastían Franco, Alessandro Mininno, Ángel M. Uranga, Xingyang Yu

Publications and Research

We initiate the geometric engineering of 2d N = (0, 1) gauge theories on D1-branes probing singularities. To do so, we introduce a new class of backgrounds obtained as quotients of Calabi-Yau 4-folds by a combination of an anti-holomorphic involution leading to a Spin(7) cone and worldsheet parity. We refer to such constructions as Spin(7) orientifolds. Spin(7) orientifolds explicitly realize the perspective on 2d N = (0, 1) theories as real slices of N = (0, 2) ones. Remarkably, this projection is geometrically realized as Joyce’s construction of Spin(7) manifolds via quotients of Calabi-Yau 4-folds by antiholomorphic …

A Template Method To Measure The $T \Bar T$ Polarisation, J. A. Aguilar-Saavedra, M. C. N. Fiolhais, P. Martín-Ramiro, J. M. Moreno, António Onofre

Publications and Research

We develop a template method for the measurement of the polarisation of $t \bar t$ pairs produced in hadron collisions. The method would allow to extract the individual fractions of $t_L \bar t_L$, $t_R \bar t_R$, $t_L \bar t_R$ and $t_R \bar t_L$ pairs with a fit to data, where L, R refer to the polarisation along any axis. These polarisation fractions have not been independently measured at present. Secondarily, the method also provides the net polarisation of t and $\bar t$, as well as their spin correlation for arbitrary axes.

Factors Associated With Mask Use In New York City Neighborhood Parks During The Covid-19 Pandemic: A Field Audit Study, Lisa Hitch, Marie A. Sillice, Hanish Kodali, Katarzyna E. Wyka, Javier Otero Peña, Terry Tk Huang

Publications and Research

Background: Mask use is a cost-effective measure to decrease COVID-19 transmission. Mask mandates intend to increase mask compliance but are often ambiguous when it comes to public outdoor spaces.

Methods: We used a field audit study to examine mask use in New York City neighborhood parks during COVID-19. 1453 park visitors were observed in 13 parks during July–August 2020 using a modified and validated park use audit tool (System for Observing Play and Recreation in Communities) that included items on general and proper mask use (i.e., mask covering both nose and mouth). Generalized estimating equation regression was used to determine …

Characterizing Changes In Extreme Ozone Levels Under 2050s Climate Conditions: An Extreme-Value Analysis In California, Bradley Wilson, Mariah Pope, Jeremy R. Porter, Edward Kearns, Evelyn Shu, Mark Bauer, Neil Freeman, Mike Amodeo, David Melecio-Vazquez, Ho Hsieh, Maggie Tarasovitch

Publications and Research

Ground-level ozone has a well established climate penalty associated with changing meteorological conditions under future climate change, but most existing research focuses exclusively on ozone-temperature relationships defined at specific locations. Using an extreme-value theory approach, we model relationships between temperature, humidity, and vapor pressure deficit and maximum daily 8 h ozone concentrations (MDA8) across California using a combination of ozone station network data and Community Multiscale Air Quality Modeling System (CMAQ) model output from 2008 to 2017. We use a spatial regression with time varying bias coefficients to fuse station observations and modeled output into a spatially explicit gridded ozone …

Strain‑Induced Quantum Hall Phenomena Of Excitons In Graphene, Oleg L. Berman, Roman Ya. Kezerashvili, Yurii E. Lozovik, Klaus G. Ziegler

Publications and Research

We study direct and indirect pseudomagnetoexcitons, formed by an electron and a hole in the layers of gapped graphene under strain‑induced gauge pseudomagnetic field. Since the train‑induced pseudomagnetic field acts on electrons and holes the same way, it occurs that the properties of single pseudomagnetoexcitons, their collective effects and phase diagram are cardinally different from those of magnetoexcitons in a real magnetic field. We have derived wave functions and energy spectrum of direct in a monolayer and indirect pseudomagnetoexcitons in a double layer of gapped graphene. The quantum Hall effect for direct and indirect excitons was predicted in the monolayers …

Exchange Rate Forecast Model: Factor Analysis, Swapnil Landge

Publications and Research

Forecasting the exchange rate using factor analysis, factors based on cross section exchange rates of different economies in terms of trade, would beat random walk model in longer out of sample horizon forecasting. In this research project, we will replicate the NBER working paper Factor Model Forecasts of Exchange Rates” by Charles Engel, Nelson C. Mark & Kenneth D. West (2012) which has used 17 OECD countries exchange rates in getting the potential factors but with extended time period from 1973:1-2021:4. We will report early sample forecasting statistics for a 1987-1998 sample. Results for late samples (1999-2022) were promising, at …

Obesity And Asthma: A Focused Review, Rubabin Tooba, Tianshi David Wu

Faculty, Staff and Students Publications

No abstract provided.

Patterns Of Interdisciplinary Collaboration Resemble Biogeochemical Relationships In The Mcmurdo Dry Valleys, Antarctica: A Historical Social Network Analysis Of Science, 1907–2016, Stephen M. Chignell, Adrian Howkins, Poppie Gullett, Andrew G. Fountain

Geology Faculty Publications and Presentations

Co-authorship networks can provide key insights into the production of scientific knowledge. This is particularly interesting in Antarctica, where most human activity relates to scientific research. Bibliometric studies of Antarctic science have provided a useful understanding of international and interdisciplinary collaboration, yet most research has focused on broad-scale analyses over recent time periods. Here, we take advantage of a ‘Goldilocks’ opportunity in the McMurdo Dry Valleys, an internationally important region of Antarctica and the largest ice-free region on the continent. The McMurdo Dry Valleys have attracted continuous and diverse scientific activity since 1958. It is a geographically confined region with …

Glucocentric Drugs In Cardiovascular Disease Protection And Heart Failure, Khawaja M Talha, Gregg C Fonarow, Salim S Virani, Javed Butler

Faculty, Staff and Students Publications

Evidence for cardiovascular outcomes with older-generation antihyperglycemic drugs in the management of type 2 diabetes is based on aggregated data from prior randomized controlled trials and observational studies that were not focused on prespecified cardiovascular end points. Newer antihyperglycemic medications have undergone a rigorous evaluation of cardiovascular outcomes through randomized controlled trials since the US Food and Drug Administration imposed a mandatory requirement for all glucose-lowering drugs in 2008. The three classes of drugs that have been most extensively studied are dipeptidyl peptidase 4 inhibitors, glucagon-like peptide 1 receptor agonists, and sodium-glucose cotransporter-2 (SGLT2) inhibitors, the latter two reporting significant …

Economic Benefits Of Precision Agricultural Technologies, Mohsina Jahan

Agribusiness and Applied Economics

The purpose of this research was to build a model of profitability that can be used by individual farmers to calculate the net benefits of using precision agricultural technologies on their farms. Three case farms were selected. Partial budgeting analysis is used to calculate the net profit effect of adopting precision agricultural technology bundles. Two scenarios were compared: farms adopting precision agricultural technologies and farms not adopting. Revenues and costs that differ between the two scenarios are included in the model. A six-step process was employed and @Risk was used to account for risk. Results show that adopting PA is …

Reservoir Recreation Analysis: The Effect Of Reservoir Management Agency On Recreation Participation, Mary Mena Boateng

Agribusiness and Applied Economics

Dams and reservoirs are created to provide flood control, water storage for irrigation and water supply, recreation, and hydroelectric generation. Most US reservoirs provide recreation in some form. However, there are concerns that certain reservoir/dam managers do a better job in providing recreation than others. Some agencies that manage land riparian to US reservoirs, such as the National Park Service (NPS), are dedicated to recreation development. Other agencies such as the Army Corps of Engineers (USACE) might not be interested in catering to the additional demands of recreators as a stakeholder group. Management actions such as boat access, waterfront land, …

Introduction To Issue Twenty-One: Open Educational Resources, Inés Vañó García, Jojo Karlin, Krystyna Michael

Publications and Research

This article is work is the introduction to the 21st issue of the Journal of Interactive Technology and Pedagogy, which is available in full at https://cuny.manifoldapp.org/projects/journal-of-interactive-technology-and-pedagogy-no-21.

As instructors in different contexts—an English program in a public two-year college, a language and linguistics department in a small liberal arts college, and digital scholarship services in a library at a major research university—we the co-editors of this special issue on Open Educational Resources (OER) have seen the attitudes toward and practices of OER shift over the last several years. Embraced by college and university administrators and funded by national and state …

A Horor Theory For Introspective Consciousness, Adriana Renero, Richard Brown

Publications and Research

Higher-order theories of consciousness typically account for introspection in terms of one’s higher-order thoughts being conscious, which would require a third-order thought—i.e., a thought about a thought about a mental state. In this work, we offer an alternative account of introspection that builds on the recent Higher-Order Representation of a Representation (HOROR) theory of phenomenal consciousness. According to HOROR theory, phenomenal consciousness consists in having the right kind of higher-order representation. We claim that this theory can be extended to introspection by recognizing that there is a distinctive kind of consciousness—i.e., introspective consciousness—which can be accounted for as the theory …

Non-Physician’S Challenges In Sexual And Reproductive Health Care Provision For Women Of Reproductive Age With Cancer: A Scoping Review Of Barriers And Facilitators, Qi Chen, Emma Carpenter, Kari White

Publications and Research

Purpose: The American Society of Clinical Oncology Clinical Practice guidelines recommend that non-physicians such as nurses, social workers, psychologists should be prepared to discuss fertility and sexual concerns with patients. However, literature showed that the utilization rate of sexual and reproductive care for women with cancer remained low. We conducted a scoping review to describe non-physicians’ roles, barriers and facilitators providing sexual and reproductive health (SRH) care to women of reproductive age with cancer.

Methods: We searched six databases for articles that met the following criteria: 1) English-language; 2) original research; 3) non-physician providers; 4) women with cancer under …

Blueprint For Success In College And Career: Oregon Edition, Dave Dillon, Linnea Angelica Spitzer, Norma Cárdenas

PDXOpen: Open Educational Resources

Blueprint for Success in College and Career, Oregon Edition is a students' guide for classroom and career success. This text, designed to show how to be successful in college and in career preparation, focuses on study skills, time management, career exploration, health, and financial literacy.

Raps Sheet, January 2022, Retirement Association Of Portland State

RAPS Sheet: Monthly Newsletter

No abstract provided.

The Reimagine Campus Safety Committee Final Report To President Stephen Percy And The Greater Psu Community, Jose Coll, Vicki Reitenauer, Ed Washington, Zachary Mettler, Charlie Evans, Crystal Renee Tenty, Deborah Mayo Kelley, Kimberly Barsamian Kahn, Marcy Hunt, Molly Gunderson, Roberto Valentin, Scott Merriman, Stéphanie Wahab, Yves Labissiere

Office of the President Publications and Presentations

On August 13, 2020, Portland State University President Stephen Percy announced two key changes in the University’s approach to campus public safety: first, Campus Public Safety officers would begin to patrol the campus without firearms and, second, a new Reimagine Campus Safety Committee (RCSC) would convene during the 2020-21 academic year to make a comprehensive set of recommendations for additional changes to the University’s approach to campus safety, security, welcoming, and belonging. In that announcement, President Percy introduced a four-person Steering Committee for the RCSC (Jose Coll, dean of the School of Social Work; Vicki Reitenauer, faculty member in Women, …

Are Infrared Thermography, Automated Feeding Systems, And Heart Rate Variability Measures Capable Of Characterizing Group-Housed Sow Social Hierarchies?, Dominique Sommer

Animal Sciences

Group gestation housing is becoming standard practice in commercial swine production. Although group housing promotes behavioral variability within the breeding herd, it can cause several management challenges for producers due to the establishment of the social hierarchy. Poor performance and welfare in group housed breeding stock can be attributed to the repercussions of aggression performed between dyads. The ability to quickly identify sows in the social hierarchy could be beneficial to producers for enforcing preventative actions. Precision livestock farming tools have proven to aid animal caretakers in monitoring animal health and welfare in livestock industries.The objective of this thesis was …

Rangeland Forage Growth Prediction, Logistics, Energy, And Economics Analysis And Tool Development Using Open-Source Software, Subhashree Navaneetha Srinivasagan

Agribusiness and Biosystems Engineering

Forage availability was crucial for livestock production across the United States. Rangelands occupied vast areas 31 % of land and were the primary source of forage for livestock. However, extreme climatic conditions such as drought affect rangeland forage production and pose a serious threat to the rangeland enterprise. This increases the need to monitor forage in vast rangelands and adapt to other measures such as cultivating or buying forage to balance demand and supply. Despite this need, resources (studies and tools) on rangeland forage monitoring and existing forage production, handling, and economics were scattered and scarce. Therefore, a comprehensive systematic …