Warped Tori with Almost Non-Negative Scalar Curvature

For sequences of warped product metrics on a $3$-torus satisfying the scalar curvature bound $R_j \geq -\frac{1}{j}$, uniform upper volume and diameter bounds, and a uniform lower area bound on the smallest minimal surface, we find a subsequence which converges in both the Gromov-Hausdorff and the Sormani-Wenger Intrinsic Flat sense to a flat $3$-torus.Comment: 21 pages. The second version has no changes to the estimates, just a change in title and some exposition in response to a request by a senior mathematician. Minor revisions made suggested by the referee in version three. To appear in Geometriae Dedicat

A Place of His Own: Inge's "The Tiny Closet" as Outside Sexual and Political Orders

This paper was presented at the William Inge Theatre Festival in May, 2013. The Inge Digital collection in KU ScholarWorks contains scholarly conference papers presented at the annual William Inge Theatre Festival, held at Independence Community College, in Independence, KS. The Independence Community College library is the curator of the William Inge Collection, home of over 400 manuscripts by William Inge donated primarily by Inge and his family, as well as press clippings, memorabilia and books

The Extent and Nature of Bullying in a Christian School

Bullying is a problem that has been studied in schools worldwide, but there is little research on bullying within Christian schools, a dearth which may stem from the assumption that Christian schools teach character traits that are inimical to bullying. Yet understanding the extent and nature of bullying in Christian schools may lead to a better understanding of ways to address the problem in all schools. Guided by social identity theory, which allowed for a focus on moral and character development, this study examined the extent and nature of bullying among 347 students in Grades 3 through 10 in a Christian school. Research questions addressed differences in bullying behaviors related to gender, grade, division, and the number of years a student has attended a Christian school. Data were analyzed from responses to the Olweus Bullying Questionnaire. One-way ANOVAanalysis of variance, chi-square, and t t tests indicated statistically significant differences in bullying behaviors based on gender, division, and years attending the school. Results indicated that girls were bullied more frequently than boys and by means of exclusion, rumors, sexual comments, and cyber bullying. Boys were more likely to bully than girls, and boys bullied primarily in physical ways and used racial comments more often than did girls. Bullying decreased from elementary to high school grades. The results of this study may be used to promote positive social change by alerting Christian school educators to the problem of bullying in their schools, and by assisting all educators in developing gender-specific programs to minimize the problem of bullying in general

Data Access for LIGO on the OSG

During 2015 and 2016, the Laser Interferometer Gravitational-Wave Observatory (LIGO) conducted a three-month observing campaign. These observations delivered the first direct detection of gravitational waves from binary black hole mergers. To search for these signals, the LIGO Scientific Collaboration uses the PyCBC search pipeline. To deliver science results in a timely manner, LIGO collaborated with the Open Science Grid (OSG) to distribute the required computation across a series of dedicated, opportunistic, and allocated resources. To deliver the petabytes necessary for such a large-scale computation, our team deployed a distributed data access infrastructure based on the XRootD server suite and the CernVM File System (CVMFS). This data access strategy grew from simply accessing remote storage to a POSIX-based interface underpinned by distributed, secure caches across the OSG.Comment: 6 pages, 3 figures, submitted to PEARC1

Detecting Invasive Insects with Unmanned Aerial Vehicles

A key aspect to controlling and reducing the effects invasive insect species have on agriculture is to obtain knowledge about the migration patterns of these species. Current state-of-the-art methods of studying these migration patterns involve a mark-release-recapture technique, in which insects are released after being marked and researchers attempt to recapture them later. However, this approach involves a human researcher manually searching for these insects in large fields and results in very low recapture rates. In this paper, we propose an automated system for detecting released insects using an unmanned aerial vehicle. This system utilizes ultraviolet lighting technology, digital cameras, and lightweight computer vision algorithms to more quickly and accurately detect insects compared to the current state of the art. The efficiency and accuracy that this system provides will allow for a more comprehensive understanding of invasive insect species migration patterns. Our experimental results demonstrate that our system can detect real target insects in field conditions with high precision and recall rates.Comment: IEEE ICRA 2019. 7 page

The Scaffold attachment factor b1 (Safb1) regulates myogenic differentiation by facilitating the transition of myogenic gene chromatin from a repressed to an activated state

The regulation of skeletal muscle gene expression during myogenesis is mediated by lineage-specific transcription factors in combination with numerous cofactors, many of which modify chromatin structure. However, the involvement of scaffolding proteins that organize chromatin and chromatin-associated regulatory proteins has not extensively been explored in myogenic differentiation. Here, we report that Scaffold attachment factor b1 (Safb1), primarily associated with transcriptional repression, functions as a positive regulator of myogenic differentiation. Knockdown of Safb1 inhibited skeletal muscle marker gene expression and differentiation in cultured C2C12 myoblasts. In contrast, over-expression resulted in the premature expression of critical muscle structural proteins and formation of enlarged thickened myotubes. Safb1 co-immunoprecipitated with MyoD and was co-localized on myogenic promoters. Upon Safb1 knockdown, the repressive H3K27me3 histone mark and binding of the Polycomb histone methyltransferase Ezh2 persisted at differentiation-dependent gene promoters. In contrast, the appearance of histone marks and regulators associated with myogenic gene activation, such as myogenin and the SWI/SNF chromatin remodelling enzyme ATPase, Brg1, was blocked. These results indicate that the scaffold protein Safb1 contributes to the activation of skeletal muscle gene expression during myogenic differentiation by facilitating the transition of promoter sequences from a repressive chromatin structure to one that is transcriptionally permissive

Variable changes in nematode infection prevalence and intensity after Rabbit Haemorrhagic Disease Virus emerged in wild rabbits in Scotland and New Zealand

The myxoma virus (a microparasite) reduced wild rabbit numbers worldwide when introduced in the 1950s, and is known to interact with co-infecting helminths (macroparasites) causing both increases and decreases in macroparasite population size. In the 1990s Rabbit Haemorrhagic Disease Virus (RHDV) infected rabbits and also significantly reduced rabbit numbers in several countries. However, not much is known about RHDV interactions with macroparasites. In this study, we compare prevalence and intensity of infection for three gastrointestinal nematode species (Trichostrongylus retortaeformis, Graphidium strigosum and Passalurus ambiguus) before and after RHDV spread across host populations in Scotland and New Zealand. During one common season, autumn, prevalence of T. retortaeformis was higher after RHDV spread in both locations, whereas it was lower for G. strigosum and P. ambiguus after RHDV arrived in New Zealand, but higher in Scotland. Meanwhile, intensity of infection for all species decreased after RHDV arrived in New Zealand, but increased in Scotland. The impact of RHDV on worm infections was generally similar across seasons in Scotland, and also similarities in seasonality between locations suggested effects on infection patterns in one season are likely similar year-round. The variable response by macroparasites to the arrival of a microparasite into Scottish and New Zealand rabbits may be due to differences in the environment they inhabit, in existing parasite community structure, and to some extent, in the relative magnitude of indirect effects. Specifically, our data suggest that bottom-up processes after the introduction of a more virulent strain of RHDV to New Zealand may affect macroparasite co-infections by reducing the availability of their shared common resource, the rabbits. Clearly, interactions between co-infecting micro- and macroparasites vary in host populations with different ecologies, and significantly impact parasite community structure in wildlife. Keywords: Co-infection, Community ecology, European rabbit, Helminth, Macroparasite, Microparasite, RHDV, Virus, Within-host ecolog

Open-Access Publishing in Tourism and Hospitality Research

This paper examines various models of academic publishing and considers their relative advantages for authors, readers, academic institutions and society. Relevant factors driving authors\u27 choice of the journal include the journal\u27s scope, reputation and publishing model used. Authors\u27 choices are shaped by the expectations of academic institutions and strongly determine both access to readers and the benefits to society. From an analysis of 174 journals in the tourism and hospitality field, four publication models are identified and compared: \u27subscription-only\u27 and the \u27Green\u27, \u27Gold\u27 and \u27Platinum\u27 open-access models. The findings of a survey of 42 editors of journals in the field are then presented. These suggest that subscription-based journals (subscription-only or hybrid) tend to be owned by commercial publishing companies and have the highest reputation, as measured by their position in one or more indexing systems. They also tend to have significantly larger paper submissions than open-access journals, especially those that use the Platinum open-access model. While some commentators have suggested that editors of open-access journals with article-processing charges may be tempted to lower their scientific standards to maximize revenues, no evidence was found that such journals have higher acceptance rates than their subscription-based equivalents

Public Libraries’ Perceptions of Future Collaborations for the Development of Smart Cities and Communities: Understanding Influential Factors

Recently, the concept of smart city has been adopted by many communities as a strategy to find alternative solutions to increasingly complex social, economic, and environmental issues. Different local actors, including public libraries, are already playing an important role in developing smart cities and communities either by themselves or in collaboration with other organizations. However, most public libraries are not currently collaborating for smart community development. Therefore, this paper analyzes the factors that influence public libraries’ perceptions about future collaborations in developing smart cities and communities as well as their potential benefits. The results show that consequential incentives, the nature of the task, preexisting relationships, an agreement on initial aims, and a collaborative and supportive leader all have a significant positive impact on the extent, effectiveness, and benefits of public libraries’ future collaborations to develop smart cities and communities