Numerical computation of Stephenson's g-functions in multiply connected domains

Click on the DOI link to access this article at the publishers website (may not be free).There has been much recent attention on h-functions, so named since they describe the distribution of harmonic measure for a given multiply connected domain with respect to some basepoint. In this paper, we focus on a closely related function to the h-function, known as the g-function, which originally stemmed from questions posed by Stephenson in [3]. Computing the values of the g-function for a given planar domain and some basepoint in this domain requires solving a Dirichlet boundary value problem whose domain and boundary condition change depending on the input argument of the g-function. We use a well-established boundary integral equation method to solve the relevant Dirichlet boundary value problems and plot various graphs of the g-functions for different multiply connected circular and rectilinear slit domains.The authors would like to thank an anonymous reviewer for their valuable comments and suggestions. CCG acknowledges the support of a LEAPS-MPS grant fro

A fourth-order Cherrier-Escobar problem with prescribed corner behavior on the half-ball

Click on the DOI link to access this article at the publishers website (may not be free).We show that the half-ball in $R _4$ can be conformally changed so that the only contribution to the Gauss-Bonnet formula is a constant term at the corner. This may be seen as a fourth-order Cherrier-Escobar-type problem on the half-ball.Funding text 1 This work was initiated and significantly advanced during the workshop Partial differential equations and conformal geometry held at the American Institute of Mathematics (AIM) in August 2022. We thank AIM for providing an ideal research environment. We are grateful for helpful conversations with Matthew Gursky, Tzu-Mo Kuo, and Andrew Waldron. The referee read carefully and made valuable suggestions. JSC was partially supported by a grant from the Simons Foundation (Grant No. 524601). Y-J.L. was partially supported by a grant from the National Science Foundation (Grant No. DMS-2418740). SEM was partially supported by a grant from the Simons Foundation (Grant No. 966614). CBN was partially supported by a grant from the National Science Foundation (Grant No. DMS-2000164). PY was partially supported by a grant from the National Science Foundation (Grant No. DMS-1509505). Funding text 2 JSC was partially supported by a grant from the Simons Foundation (Grant No. 524601 ). Y-J.L. was partially supported by a grant from the National Science Foundation (Grant No. DMS-2418740 ). SEM was partially supported by a grant from the Simons Foundation (Grant No. 966614 ). CBN was partially supported by a grant from the National Science Foundation (Grant No. DMS-2000164 ). PY was partially supported by a grant from the National Science Foundation (Grant No. DMS-1509505 )

Senator list of the Faculty Senate, 2025-2026

Senators At Large -- Applied Studies -- Business -- Engineering -- Fine Arts -- Health Professions -- Humanities -- Math/Natural Sciences/Physics -- Social Sciences -- University Librarie

Mission analysis for an in-space solar neutrino detection experiment

Click on the DOI link to access this article at the publishers website (may not be free).NuSol is a proposed mission to fly a neutrino detector in proximity of the Sun, in order to conduct unique science experiments that cannot be realized by detectors stationed on the Earth. The paper presents analysis of the NuSol mission in order to understand the anticipated scientific output of the mission, in terms of the expected neutrino count, as well as opportunities for observing coherent-to-decoherent state transition of neutrinos. To facilitate this analysis, we developed a computational framework incorporating patched-conics methodology, gravity assist maneuver modeling using pump and crank angles, and Tisserand plots. Considering scenarios of powered and unpowered gravity assists, numerical simulations are presented to identify trades associated with the realization of the scientific objectives of the mission.The authors acknowledge funding support for the research by grant number 80NSSC21K1900 from NASA Innovative Advanced Concepts (NIAC) program

Mechanochemistry: A powerful tool to engineer catalyst's functionality

Click on the DOI link to access this article at the publishers website (may not be free).Mechanochemistry has emerged as a transformative and sustainable approach in catalysis, redefining traditional methods of catalyst synthesis and modification through solvent-free and scalable processes. This review delves into its innovative applications, showcasing how mechanochemical techniques like ball milling enable precise control over material properties, including nanostructuring, particle size reduction, and defect engineering. These advancements have paved the way for catalysts with enhanced activity, selectivity, and stability, which are crucial for emerging industrial processes such as CO2 reforming, hydrogenation, and oxidation reactions. Despite its ground-breaking potential, challenges related to mechanistic understanding, industrial scalability, and cross-laboratory reproducibility persist. This review emphasizes that integrating advanced in-situ characterization techniques and computational modeling is vital for overcoming these barriers. By doing so, mechanochemistry can be firmly positioned as a cornerstone for future innovations in sustainable catalyst design and green chemical manufacturing.The support provided by Interdisciplinary Research Center for Refining and Advanced chemicals, King Fahd University of Petroleum & Minerals through the project No. INRC2519 is acknowledged

Standing committees of the Faculty Senate, 2025-2026

Committee Chairs -- Academic Affairs -- Academic Integrity Policy Committee -- Accessibility -- Court of Academic Appeals -- Faculty Affairs -- Faculty Support -- General Education -- Library -- Planning and Budget (Two year term) -- Rules -- Scholarship and Student Aid -- Tenure and Promotion -- Undergraduate Research -- University Exception

Critiquing the community college stigma through the disability justice principles

Click on the DOI link to access this article at the publishers website (may not be free).Educational hierarchies continue to proliferate in the U.S. reifying social inequities and benefitting a select few. Community colleges seek to disrupt this sorting mechanism with their non-elite admissions, varied educational offerings, and integrated student populations. As a consequence for challenging the status quo, community colleges are stigmatized as a haphazard, floundering mistake, but we contend the community college stigma is a tool for social stratification. The stigma, like all stigmas, reinforces and is reinforced by societal biases, and in this case, the value-laden narrative is linked with educational affiliation. By combatting the community college stigma, the many pervasive isms (i.e. racism, ableism, classism) are simultaneously destabilized. Therefore, as a collective of community college alumni and advocates, we critique the community college stigma via the disability justice framework in this article. We specifically engage the principles of intersectionality, collective access, interdependence, leadership of those most impacted, sustainability, and collective liberation to examine who the stigma harms and serves. We pose reflective questions to unsettle coded language and normalized practices that position community colleges and their students in need of external, education saviors. Further, we invite readers to acknowledge the importance of these locally situated, community-engaged institutions and to chart a transformative path forward by enacting community college values. © 2025 Taylor & Francis Group, LLC

Book–tax differences and earnings persistence: The moderating role of sales decline

This is an open access article under the CC BY license.This study investigates why firms with large book–tax differences (BTDs) exhibit lower earnings persistence, particularly during periods of revenue declines. While prior literature has linked BTDs, especially large positive BTDs (LPBTDs), to earnings management, we propose an alternative explanation rooted in operational disruptions. Using a large panel of U.S. firms from 1995 to 2016, we examine whether short-term earnings persistence is affected by sales trends and the direction of BTDs. Our findings reveal that both large positive and large negative BTDs are significantly associated with reduced earnings persistence when sales decline. The effect is pronounced in both accrual and cash flow components of earnings. We develop and test a framework based on “operations theory,” which attributes this reduction to real business shocks, such as asset write-downs, facility closures, and reserve adjustments, that arise during sales decline periods. These results highlight the importance of distinguishing operationally driven BTDs from those arising through discretionary accruals. Our findings have implications for investors, regulators, and researchers seeking to interpret BTDs more accurately in volatile economic environments. © 2025 by the authors

Temperature and dung availability drive intraspecific dung beetle body size across grassland grazing regimes

Click on the DOI link to access this article at the publishers website (may not be free).Animal body size is an important trait with implications for an organism's ecological roles. Larger dung beetles can bury more dung, increasing soil nitrogen retention, reducing greenhouse gas emissions, and reducing livestock parasites. We studied two focal dung beetle species across shortgrass prairie sites to examine the influence of four key drivers (local temperature, plant nutrient availability, presence and density of large mammalian grazers and insecticide use) on intraspecific beetle body size and trap catch. Dung beetles were collected using pitfall traps for one growing season. We collected over 17,000 dung beetles and measured body size parameters on over 4600 individuals of two common species in northeastern Montana, USA: Canthon pilularius, a large native species, and Onthophagus nuchicornis, a smaller non-native species, across 24 field sites. Bayesian linear models were used to estimate body sizes and trap catches, and to assess responses to grazing regimes and habitat characteristics. The lowest trap catches for both species were in sites treated with insecticides and ungrazed sites. Compared with other treatments, C. pilularius was most numerous in sites grazed by cattle, and O. nuchicornis was most numerous in untreated prairie dog sites. C. pilularius tended to have smaller body sizes in sites with insecticide use and bison and cattle units, but was larger in areas with more browser dung (deer [Odocoileus spp.] and pronghorn antelope [Antilocapra americana]). O. nuchicornis had smaller body sizes in prairie dog sites. Hotter temperatures within the 20?days prior to capture resulted in smaller individuals, especially of the native species C. pilularius, while increased browser dung 20?days prior to capture was associated with larger body sizes in both beetle species. Dung beetle species varied in their responses to large herbivores and dung availability, with browser dung being a potentially overlooked key resource for the most common, native dung roller in our system. Lag effects had measurable impacts on dung beetle body size, suggesting environmental conditions during dung beetle development can affect the ecosystem services dung beetles provide. Warming temperatures due to climate change may reduce body sizes of dung beetles, negatively affecting their ability to provide ecosystem services related to animal waste removal and nutrient cycling